Compressor clutch not engaging after blower resistor replacement?

  • Shops are reporting a high incidence of the AC compressor clutch not engaging after blower motor resistor replacement. Fix: Make sure you’ve installed the right blower motor resistor. The resistor for a manual temp control versus automatic temperature control can cause the AC compressor no engaging condition.

Can cause the compressor clutch to not engage?

One of the reasons why compressors do not engage is because of a low pressure lockout, a poor ground, a bad clutch coil, an opening in the wire to the clutch coil, or simply a blown fuse. There are several ways A/C compressor clutches receive power.

Why won’t my AC clutch engage?

Why AC clutch won’t engage If the clutch doesn’t engage, the problem could be a blown fuse, an open in the wire to the clutch coil, a bad clutch coil, a poor ground, a low pressure switch lockout, or even a bad engine coolant temperature switch.

How do I get my AC compressor clutch to engage?

Take the fused jumper wire and connect its one end to that side of the wire connector that was connected to the compressor. Attach the other end of the jumper wire to the positive terminal of the battery. It will supply the battery voltage to the compressor clutch, allowing it to engage manually.

What module turns the compressor clutch on?

An AC clutch cycling switch is used to determine low side A/C pressure (which is directly proportional to temperature). This information is then used by the electronic control module (ECM) to control the compressor clutch.

Will compressor clutch engage without freon?

There is a low pressure switch in the A/C system. With no freon, the compressor clutch will not engage, therefore, the compressor, in your situation, should be just fine once the system is repaired and recharged.

What causes low pressure lockout?

When a unit cycles or locks out on the low pressure switch, what should you look for? the most common cause is low air flowacross the evaporator. look for dirty filters, dirty evaporator coil, dirty blower wheel. Check the blower motor amperage and compare to the name plate.

How do I manually turn on my AC compressor?

At the compressor’s front side, unplug the single wire connector, take a jumper wire and attach it to the wire that you just disconnected from the compressor. Connect the other end of the jumper’s wire to the positive terminal of the car battery. This will enable the compressor to start manually.

Why is my car compressor not working?

If the AC compressor doesn’t turn on, the most common culprit by far is low AC refrigerant. If there is a leak, no matter how small, it’ll eventually cause a non-working AC system. Poor grounding, frayed wiring, bad clutch coil, and defective AC pressure sensor switch can also be an issue although less common.

How do I know if my AC compressor clutch is bad?

Bad AC Compressor Clutch Symptoms

  1. Higher Cabin Temperatures. The most common sign of all bad ac compressor clutch symptoms is a higher cabin temperature than usually during hot days when you need the A/C.
  2. Loud Noises.
  3. Clutch Stopped Moving.
  4. Inability to Turn Air On or Off.
  5. Leaking Refrigerant.

Compressor clutch not engaging

If
you’re here, it’s likely that you’ve attempted to recharge your air conditioning system and discovered that the compressor clutch was not engaging. If this is the case, you should attempt the troubleshooting steps provided here. This is a comprehensive description of how the system operates. After you’ve finished reading, check out this page to discover how to diagnose a compressor clutch issue.

Before you start, know the difference between a clutch type AC compressor and a clutch-less compressor

Late-model automobiles are equipped with a variable displacement air conditioner that requires no clutch. These compressors are not equipped with a clutch. During the whole time the engine is operating, the pulley is driving the compressor. During periods when the air conditioner is not in use, the wobbling plate within the compressor is in the 0° position, which means that the compressor is not compressing any refrigerant. The clutch type compressor is seen in older cars. The pulley rotates continuously while the engine is running, however the clutch plate remains motionless when the air conditioning is turned off.

What makes an AC compressor clutch engage?

The variable displacement air conditioning compressor in late-model automobiles is clutchless. There is no clutch on this compressor. When the engine is operating, the pulley is engaged and powers the compressor. During periods when the air conditioner is not in use, the wobbling plate within the compressor is in the 0° position, indicating that the compressor is not compressing any refrigerant. An older vehicle’s compressor is operated by a clutch mechanism. When the air conditioning is turned off, the pulley continues to rotate during the entire time the engine is running.

Why AC clutch won’t engage

It is possible that a blown fuse, an open in the wire to the clutch coil, a defective clutch coil, a weak ground, a low pressure switch lockout, or even an ill-functioning engine coolant temperature switch is the cause of the failure to engage the clutch.

AC clutch not getting power

A compressor clutch relay can transfer power in a variety of ways depending on the application. From the low-pressure switch on the wall. When the low pressure switch detects refrigerant pressure that exceeds the low pressure limit, it closes a switch that provides complete ground to the AC compressor clutch control coil and the control coil for the compressor clutch. The control coil energizes and shuts the relay connections, allowing power to be supplied to the AC compressor clutch coil through the control coil.

  • It is the PCM/responsibility ECM’s to monitor the low and high pressure switches, and if the pressures are within specification, the PCM/ECM will deliver ground to the AC compressor clutch relay control coil, otherwise it will not.
  • In each of these instances, the compressor clutch fuse would be the first thing you’d check throughout the diagnostic process.
  • The compressor clutch relay is grounded in a computer-controlled system since the computer is controlling the system.
  • Remove it from the vicinity of moving parts so that you can securely check for power and ground connections.
  • NOTE: Some automobiles only have a single power wire that connects to the clutch coil and nothing else.
  • You should disconnect the compressor clutch relay and check for power and ground on its control coil terminals in the socket if you aren’t obtaining battery voltage at that location.

It is possible that the fault is with the compressor clutch itself if you notice battery voltage on the compressor clutch connector.

Is the compressor clutch air gap set properly?

The air gap between the compressor clutch and the AC compressor clutch is important for the compressor clutch to engage. Read this article to find out more about the air gap in the AC compressor clutch.

Neverjumper across the low pressure switch?

In order to avoid catastrophic failure, air conditioning compressors require a steady supply of oil, and the refrigerant is responsible for transporting this oil throughout the whole system. As a result, automakers include a low pressure switch in their vehicles, which prevents the compressor from functioning when the system is short on refrigerant. Recharging instructions included with DIY recharging kits state that you should recharge through the low pressure port while the compressor is in operation.

  1. Some do-it-yourselfers believe they can simply jumper the low pressure switch to compel the compressor clutch to activate while they recharge their batteries.
  2. The compressor will be running with little or no lubrication if the low pressure switch is activated with little or no refrigerant in the system.
  3. The same may be said for this situation.
  4. It is NEVER a good idea to try to bypass the low pressure switch.

Is the AC system too low to charge?

If an air conditioning system is so low on refrigerant that it is unable to engage the compressor clutch, it is likely that it is too low to be refilled using a do-it-yourself kit. If the pressure is below the low pressure switch limit, this indicates that there is a significant leak in the system, as well as air and moisture in the system. If you attempt to fill the system with air and moisture that is still within, the system will not function properly. The moisture will cause the expansion valve or orifice tube to become brittle and break down completely.

Even if the charge pressures appear to be satisfactory, air in the system will limit cooling.

Can you check an AC charge level with the gauge on a DIY kit?

No, not at all. DIY kits include a low-pressure side gauge that is intended to offer both a static pressure measurement (when the engine is not running or the air conditioning is turned off) and a running pressure reading. However, just looking at the pressure data will not tell you how much refrigerant is in the system. You must also be aware of the temperature of the surrounding environment. The truth is that if you observe a static pressure measurement of 50 psi, all it informs you about the system is that there is some refrigerant present.

However, unless you consult a temperature pressure chart, that measurement will not inform you whether or not the system is running short on charge.

What does a low-pressure gauge static reading tell you?

One thing a static measurement can tell you is whether or not your system is fully empty (0-psi. ), or whether or not there is enough pressure in the system to override the low-pressure switch. Period.

How to charge an AC compressor even if compressor isn’t running

It is possible to add extra refrigerant to the system without having to hot wire the low-pressure switch or turn on the compressor beforehand. It’ll simply take a long time to get there. In order to recharge the battery, connect it to the low-pressure (suction) port. The low-pressure tubing has a wider diameter than the high-pressure line, and this is always the case. Aside from that, the DIY kit fitting will only connect to the low-pressure port. Turn the ignition key to the RUN position and the blower fan to the HIGH setting.

  1. After that, begin adding refrigerant.
  2. The condensing action of the radiator fans will cause the refrigerant to condense and then return to its liquid state.
  3. However, there is a good probability that some of the refrigerant will make it to the orifice tube and flow into the evaporator coil anyhow.
  4. If you wait for a few minutes, you might be able to build up enough pressure to turn off the low-pressure switch.
  5. For systems with expansion valves, the blower fan will prevent the detecting tube from shutting off the expansion valve while you are adding refrigerant to the system.
  6. DO NOT connect the low-pressure switch to a hot wire.
  7. Rick Muscoplat posted a blog entry on

8 Reasons an A/C Compressor Clutch Won’t Engage (and How to Jump It)

The most recent update was made on June 28, 2021. Few car amenities are as well-liked by the ordinary motorist as air conditioning, especially during the sweltering summer months. The air conditioning system in a car effectively stops the summer heat in its tracks, replacing it with a soothing coolness. Are you looking for a reliable online repair manual? The top five choices may be found by clicking here. Nowadays, sophisticated A/C systems are also equipped with dual-climate control, which allows each individual passenger in a car to individually regulate the temperature in the cabin.

Unfortunately, air conditioning-related problems of varied severity can and do arise from time to time.

One of the most prevalent types of A/C system-related defects is that of an inoperable A/C compressor clutch, which is one of the most common symptoms.

Find out more about the reasons of an inoperable A/C compressor clutch and how to resolve the problem if it occurs again in the future by continuing reading this article. 1. Also see: 8 Reasons Why Your Air Conditioner Isn’t Blowing Cold Air

What is an A/C Compressor Clutch?

It is the air conditioner compressor clutch in a vehicle that is responsible for distributing power to the internal drive components of an A/C compressor’s internal drive system. An air conditioning compressor pulley free spools when the air conditioner is switched off in a car. As a result, no rotational force is delivered to the driveshaft of the air conditioning compressor. This reduces the amount of additional stress exerted on a vehicle’s engine and reduces the amount of internal compressor wear experienced.

This energization of the clutch coil generates a magnetic field, which aids in clutch engagement by drawing the clutch’s drive plate inward, where it meshes with the clutch body/compressor pulley, therefore increasing clutch engagement.

When the air conditioning system in a car is switched off, the clutch coil that is associated with it is de-energized.

Car A/C Condenser Symptoms: What You Should Look For

Causes of an A/C Compressor Clutch That Won’t Engage

For a variety of reasons, including electrical issues, an air conditioning compressor clutch may fail to engage when it should. The actual reason of such problems varies from one car type to the next, as well as from one year to the next. The following are some of the most prevalent reasons of an inoperable fan A/C compressor clutch, as identified by the manufacturer.

1 – Blown A/C Clutch Fuse

Many times, an A/C compressor clutch fuse is to fault for a clutch failing to engage or turn on when it should have done so. However, it is necessary to discover the exact cause of the fuse’s failure as well. This can be caused by a shorted hot wire or a malfunctioning clutch assembly, among other things.

2 – A/C Clutch Relay Failure

The majority of automobiles rely on the usage of a relay to regulate the operation of the air conditioning clutch. When the relay fails or becomes stuck, it might prevent power from being transmitted to the clutch’s coil.

3 – Faulty Switches

Modern car air conditioning systems rely on the employment of a number of switches in order to function efficiently. In particular, low-pressure and high-pressure switches, as well as evaporator temperature sensors, have a direct impact on the power and ground sent to an A/C clutch. The most notable of these switches are low-pressure and high-pressure sensors. The breakdown of any of these sensors can result in the inability to operate an A/C clutch.

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4 – Faulty Wiring

In most situations, electricity and ground are supplied to an A/C compressor’s clutch assembly by a wiring pigtail that is connected to the engine’s main wiring harness through a connector.

It is not possible for the compressor’s clutch to work if there is an open state on any of the wires in this circuit. In rare circumstances, the wire may be in good condition, but the harness may be faulty.

5 – Low Refrigerant Charge

The low pressure switch on an air conditioning system is meant to disconnect power and ground delivery to the compressor clutch in the event of low system pressure. As a result, a low refrigerant charge is frequently the cause of a failure of the compressor clutch to operate properly.

6 – High Refrigerant Charge

In a similar vein, the high pressure switch on an air conditioning system is designed to limit power and ground delivery to a compressor’s clutch in the case of an over-pressurization occurrence. If a system is overloaded with refrigerant, the high pressure switch will, by default, impair the clutch’s ability to operate.

7 – Faulty A/C Clutch

The clutch component of a compressor might begin to exhibit signs of wear and tear over time. The face of the clutch plate of an A/C clutch will wear down over time, and this will cause the clutch to slip. It is also possible for the coil of an A/C clutch assembly to break completely, preventing the clutch from engaging.

8 – Control Head/Computer Failure

Through the system’s dash-mounted control head, an A/C clutch receives its operating orders from the driver and performs the necessary operations. Any form of failure inside this device has the potential to prevent the clutch’s coil from being activated. Several systems additionally pass control head signals through the vehicle’s ECM/PCM for additional security. As a result, a partial failure of a control module can also result in the functioning of the compressor clutch.

How to Manually Engage an A/C Compressor Clutch

There are a variety of situations in which manually engaging the clutch of an air conditioning compressor might be beneficial. Perhaps the finest application of this technique is when seeking to establish whether or not the clutch itself has failed to function properly. If you provide the clutch coil with various hot and ground sources, it will be easier to identify the source of the compressor clutch-related difficulties. The instructions below will guide you through the process of manually engaging the clutch component on your air conditioning compressor using the jump technique.

  1. Detach the Clutch Wire Pigtail:To begin, you must locate and disconnect the wiring pigtail that corresponds to the clutch assembly on your compressor. The wiring for this component is normally run from behind the air conditioning unit, near the front end of the vehicle’s compressor
  2. However, this is not always the case. To complete this task, you must first identify the power and ground wires that are present in this connection. In case of uncertainty, always refer to the manufacturer’s wiring schematic for your individual car. Make Jumper Wires:You will now need to make jumper wires for both the power and ground ends of the control circuit for your compressor’s compressor. An inline fuse must be included in the jumper wire that will be used on the positive side of the circuit if it is to function properly. It is also beneficial to attach alligator clips to the supply end of these jumper wires, so that they may be quickly linked to the terminals of your battery. It will now be necessary to connect your freshly fashioned jumper wires together in a logical manner. Please double-check that the fused jumper wire is connected between the positive wire of your clutch coil and the positive post of your battery. The remaining jumper wire should be connected by connecting it to the negative wire of the clutch coil and the negative post of your battery. You will now be able to establish whether or not your A/C clutch is defective based on the observations you have made. If your compressor’s clutch fails to engage when the compressor is jumped, it is recommended that you replace the compressor. The sudden rearward movement of the assembly’s clutch plate, which will be accompanied by an audible ‘click,’ will indicate that the clutch has engaged. If your A/C compressor’s clutch engages when jumped, further investigation will be required because the underlying fault is located in the system’s control circuit.

Replacing the A/C Compressor Clutch vs A/C Compressor

For a long time, replacing an A/C clutch was considered to be a more cost-effective option than replacing an A/C compressor in its whole. These days, however, this is not always the case. Most major automobile manufacturers now suggest that a compressor be replaced in the case of an A/C clutch failure, regardless of the brand. In reality, many of today’s A/C clutches are no longer capable of being serviced on their own. This needs the replacement of the compressor since it completely eliminates the option of clutch renewal.

In today’s market, aftermarket air conditioning compressors are available at a reasonable price, removing the financial benefit associated with clutch replacement.

The fact that A/C clutch repair necessitates the use of specialized tools and is often significantly more difficult than the total replacement of an A/C system’s compressor should also be taken into consideration. Also see: Signs and Symptoms of a Faulty A/C Expansion Valve

Car air conditioner compressor clutch not engaging

Using the troubleshooting steps given here, you may determine if your car’s air conditioner compressor clutch is not engaging properly. The air conditioning compressor is engaged and disengaged by use of an electro-magnetic clutch, which is used by automobile manufacturers. The three components of the air conditioning compressor clutch in an automobile are as follows: When power is applied to the clutch coil, the magnetic field created by the current draws the clutch in and engages the compressor shaft.

  • As a result, you should begin by evaluating whether or not the compressor clutch is operational.
  • Then have a look at the compressor clutch from the front.
  • If the only thing that is rotating is the pulley, there is an issue elsewhere in the system.
  • In certain cars, the low pressure switch and the evaporator temperature sensor are used to control the compressor clutch relay, which is switched on and off.
  • Remove the electrical connector from the clutch coil and set it aside.
  • Use a digital voltmeter to check for battery voltage and good ground at the connector when the engine is running and the AC is set to the maximum setting.
  • If the fuse is good, replace the compressor clutch relay.

Some automobile manufacturers use the PCM or ECM to trigger the relay control coil ground, while others do not.

When electricity is applied to other cars, it passes via the air conditioning switch and into the fuse, and then passes through the fuse, past the low pressure and evaporator temperature sensors, and into the clutch coil.

As a result, automakers include a low pressure switch in their vehicles, which prevents the compressor from functioning when the system is short on refrigerant.

However, if the system’s refrigerant level is too low, the clutch will not engage.

AWFUL DECISION.

Even if you are successful in getting it to accept a charge, it is possible that you have already destroyed the compressor.

This will force the compressor to operate with insufficient oil, which may result in the compressor being destroyed.

Due to the fact that there is likely air and moisture in the system, the leak is significant and should be addressed.

After that, the system should be completely evacuated to ensure that all air has been removed before it can be recharged.

Adding extra refrigerant is possible without having to hot wire the low pressure switch and operate the compressor at full capacity.

In order to recharge the battery, connect it to the low pressure (suction) connector.

In addition, the DIY kit fitting will only attach to the low pressure port, not the high pressure.

To activate the radiator fans, turn the air conditioner up to its maximum setting.

Depending on whether your car is equipped with an orifice tube system, the refrigerant gas will pass through one of the open compressor reed valves before entering the condenser coil.

Because the compressor will not be functioning, there will be no pressure in the system.

Whenever a liquid enters the evaporator, it will boil and change back into a gas as long as the blower fan is operating.

Try starting the engine and inspecting the compressor to see what happens.

If this procedure does not work, you should take it to a professional.

Compressor and clutch assembly for air conditioning systems Sachin Naireautorepair.net was founded in 2015.

Technical service bulletins, code definitions and step-by-step testing, as well as easy-to-understand wiring diagrams, are all included, as is an explanation of how the systems are designed to function.

Take a look at these!

Furthermore, you must access to the most recent technical service bulletins so that you do not spend time and money repairing parts that may misbehave as a result of a software bug on the part of the manufacturer.

They will only serve to mislead you.

Get a 1-Month (31 Days) subscription for $16.99, a 1-Year (Best Value!) subscription for $25.99, or a 4-Year (Best Value!) subscription for $39.99. I like the wiring diagrams on Eautorepair.net to the difficult-to-read factory schematics on Alldatadiy because they are more user-friendly.

AC Compressor Not Working

The air conditioning compressor is disengaged and reengaged using an electro-magnetic clutch, which is used by the vast majority of automobile manufacturers. As previously stated, a magnetic field is used to draw the clutch in closer to the pulley. The clutch disc will next be splined to the compressor shaft, and the process will repeat. When this occurs, the pulley also serves as a source of spinning power for the compressor, which allows it to perform properly. Upon effective engagement of the clutch, the compressor for the air conditioning system will begin to pump refrigerant.

Try cranking the A/C settings all the way up to MAX A/C and then starting the engine.

If you look closely, you should be able to see both the clutch and the pulley rotating.

It is possible that you will just observe the pulley rotating, which means that there is an issue elsewhere in the system.

What’s Preventing the A/C Compressor from Engaging?

It is possible that a low pressure lockout, a faulty ground, a damaged clutch coil, an opening in the wire to the clutch coil, or simply a blown fuse are the causes of the compressor not engaging. There are a variety of methods through which A/C compressor clutches acquire electricity. One advantage is that the PCM can control the relay (the PCM interprets the condition of the low and high pressure sensors). Another method is to have a relay activate the clutches, which is powered directly by the low/high pressure switches when they are in a given state.

  • Let’s pretend that the fuse is in fine working order.
  • Before examining the power and ground, make sure it is not in close proximity to any moving components.
  • It is possible to check the voltage of the battery if you have a digital voltmeter.
  • It is possible that some automobile manufacturers will trigger relay control coil ground through the ECM or PCM.

Can You Charge a ‘Dead’ Compressor?

Yes, it is possible. In order to begin, you must connect the recharge kit to the suction system. It is important to note that the low-pressure tubing always has a wider diameter than the high-pressure tubing. Aside from that, the kit fitting is only compatible with the low pressure port. After that, turn the key to the RUN position and the blower fan to the HIGH position. By cranking the A/C up to its maximum setting, you may activate the radiator fans. It is now time to begin adding refrigerant to the system.

A closed compressor reed valve will most likely be used to allow refrigerant gas to reach the condenser coil in most situations.

After that, you should have enough pressure to turn off the low pressure switch on the circuit breaker. If nothing seems to work, do not try to hot wire the low pressure switch; instead, it is advised that you take your vehicle to a professional to have the problem diagnosed.

Help! A/C compressor clutch not engaging

  • Date of joining:June 4, 2009 Member:18031 Messages:279 Gender:Male San Juan, Puerto Rico Automobile:Sand Pearl Black 06 6spd DC SB TRD OR Modified The A/C was running properly last night, but this morning it would not engage the compressor clutch
  • The 10amp fuse was OK, but it was replaced nevertheless with no success. Because the compressor is not engaged and the air is not cold, the problem must be electrical
  • However, all of the control lights are in good working order
  • There are no blinking lights or anything abnormal
  • The blower is fine at all speeds
  • The only air being blown is ambient temperature
  • Do you have any suggestions on where to begin? I’m attempting to obtain a copy of the electrical schematic, but have had no success thus far. If anyone can point me in the right direction or provide a copy of the schematic, that would be highly appreciated. If the temperature control is set to heat, everything works fine
  • Nevertheless, there has been no cold air and no strange noises in recent weeks. It appears that the signal to engage the clutch is not getting through to the compressor. Thanks

Sandman614Snarky TWSS elf, Travishotsavannahdotcom, LRGRNR⛄ Official TWSS Elf ❄️

  • Date of joining: October 26, 2010 Member:45273 Messages:34,837 Gender:Male First Name: TimGarner, North Carolina/Boone, North Carolina 2006 SR5 Off RoadARB Front Bumper, Projector Headlights w/Slimcubby 4300K HID’s, Oznium LED’s, LED taillights, DIY Washable Cabin Moose Filter, Sockmonkey SR5 Off Road, Aux Audio plug, OME 886x, OME Nitrochargers, Wheelers 3 Leaf Progressive AAL, Dodge D-Rings, ImMrYo Rear-View Mirror Lift Bra If your free-on is too low, the clutch will not engage automatically. If the wiring appears to be in good condition, I would proceed to the next step. Those charge-it-yourself kits are available at auto parts retailers.
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NirvanaTesla Auto

  • Date of joining: January 2, 2010 Member:28653 Messages:1,248 Gender:Male Kris Morgan Hill, a native of the United States, goes by her first name. The following features are included: 2006 Off Road 4X4
  • Icon extended travel 2.5RR in front, Icon extended travel 2.0RR in rear, BuiltRight uniball UCAs, Wheelers Superbumps, Goodridge steel braided brake lines, BruteForce front plate bumper with Warn M9000+synth line, American Auto Horns ACDF, Pelfrey Bussman mount+Sandman bussman fuse block (soon), 255/75R16 tires on because I’m not going to spend $800 to have rock rash new wheels installed by you scrubs. Sound deadener and improvement from Shok Industries’ 2/0 large four. It should be evacuated and charged with the appropriate charge/checked for leaks, according to the anal retentive tech in me. It’s possible that the problem is electrical, however I have seen more compressors ‘stop operating’ due to a lack of charge than from any other cause.

Mandy3206Well-Known Member

  • Date of joining:June 4, 2009 Member:18031 Messages:279 Gender:Male San Juan, Puerto Rico Automobile:Sand Pearl Black 06 6spd DC SB TRD OR Modified First and foremost, obtain the dials and check for pressure, which we will do right away and see how things go from there. Any more information would be much appreciated.

ailll1Well-Known Member

  • Date of joining: November 3, 2011 Member:66387 Messages:145 Gender:Male Alex is his given name. Canada’s province of Québec Vehicle:2016 TRD Sport Double Cab Toyota Tacoma Trd Sport Just a random thought: Make an attempt to jump the freon sensor in order to trick the truck into thinking the freon tank is full. Check to see if it responds then. However, do not leave it running for an extended period of time. Someone might be able to tell us where to look for this particular sensor.

Got2rydeWell-Known Member

  • Date of joining: May 1, 2012 Member:77982 Messages:609 Gender:Male Ryder Maryland is my given name. Automobile: ac or a six-speed silver streak ATO rear with flush mount duallys, FJ Trail Team black rims with Duratracs, GTCovers wetskinz seat covers, Direct wired Escort 9500xi, Leer 180 with ARB awning, bed mat, extra d-rings, rear differential breather relocated, Weathertec mats, Elite front with Warn M8000-s and Rigid D2’s, BAMF sliders, ABS killswitch, Kicker Hideout sub, I took a spin in my first-generation Toyota Tundra. Two nearby garages and one toy store all agreed that I needed a new compressor. A slew of diagnoses resulted in the same tentative conclusion. I tried replacing the compressor myself, but to no avail. I eventually found out that when I had my dash apart earlier, I hadn’t completely reconnected the a/c button plug! I was very frustrated! First, have a look at the straightforward crap! Separately, I have a perfectly functional air conditioning compressor off of a 4.0L Toyota Tundra for sale at a low price.

TacorriendoWell-Known Member

  • Date of joining:June 23, 2013 Member:106885 Messages:263 Gender:Male FredTexas is his given name. Vehicle:2009 DCSB 4×4 Off-Road Vehicle Description Front lift, ride rite airbags, side steps, and a switch for the back camera are all included. Manually engaging the clutch is also an option. only for the purpose of troubleshooting

blakes09Toyota Tech.when im not Fishing

  • Date of joining: April 18, 2012 Member:77164 Messages:818 Gender:Male Blake’s first and last nameDeep South The compressor is receiving power and ground from the vehicle (4×4).

Mandy3206Well-Known Member

  • Date of joining:June 4, 2009 Member:18031 Messages:279 Gender:Male San Juan, Puerto Rico Automobile:Sand Pearl Black 06 6spd DC SB TRD OR Modified Initially, a local auto air conditioning shop determined that the evaporator was shot because there was some oil on the drain line tip. He charged some gas into the circuit and tested for gas out of the drain line with a sensor, which sounded when it was close to the drain line. The second diagnostic came from a local auto air conditioning shop. A quote for $1,130.00 was provided. In response to the gentleman’s request for $395.00 for the evaporator (OEM), I phoned my local dealer, who offered a list price of $260.00, which included my discounts, for the evaporator. Since he owns a shop, I’m sure he can get it for less, but this guy wants to rip me off for $265.00 on that item alone, $125.00 for the expansion valve (which I’ll have to get from a friend at the dealer, but someone told me it would be around $60.00), $10.00 for an Oring kit, $15.00 for the oil, and $65.00 for charging the system, among other things. The icing on the cake was that he demanded $520.00 in labor! The next step would be to obtain a second estimate from a different technician whom I do not know, simply to make sure the diagnosis was correct, and then a third quotation from a recommended technician who provides competitive pricing to my father in law. Finally, a neighbor who works with mini-splits offered to install the components for free if I purchased them from him
  • However, he requested that we first verify that we had the exact diagnosis, which is why we obtained three quotes. I’m most likely going to acquire the components through my local dealer, who has always provided me with competitive rates on OEM parts. I’ll keep you informed as events unfold. Since it is Friday and the project will not resume until Monday, any more suggestions will be very welcomed. Thanks

savedoneWell-Known Member

  • Date of joining: May 17, 2013 Member:104359 Messages:1,064 Gender:Male GeraldTexas is his given name. Vehicle: TRD off-road manual transmission The dealer installed a 3 inch raise at the time of purchase. I’m assuming he charged you somewhere in the neighborhood of a hundred bucks for checking out the system. That is the standard rate in my neighborhood. If you’re going to obtain another diagnostic, I’d recommend going via the dealer. After that, you may purchase all of the necessary parts, including oil and Freon, and have your neighbor install them.

Mandy3206Well-Known Member

  • Date of joining:June 4, 2009 Member:18031 Messages:279 Gender:Male San Juan, Puerto Rico Automobile:Sand Pearl Black 06 6spd DC SB TRD OR Modified Thanks, I’ll check with the dealer as well and see what they have to say
  • There was no price for the quotation, and I believe the cost of the quotation was included in the labor portion

85GT 79FJ40Well-Known Member

  • Date of joining: December 16, 2010 Member:47768 Messages:999 Gender:Male Ken’s given name is New Hampshire. The vehicle is a 2011 4Runner Trail. There’s a lot of cool things and 285’s roaming about. It was a bizarre thing that happened to the evaporator. Usually, if anything is going to fail, it is the condenser, which is caused by road debris. In 2004, I purchased a brand new RSX, which was damaged by a rock on the third day of ownership. The evaporator, on the other hand, is located under the dashboard and is more difficult to replace than the condenser. Installing A/C parts isn’t difficult if you’re patient, but most people don’t have a vacuum pump or manifold established to correctly evacuate and charge them once they’ve been installed. Prior to purchasing my own system, I used to complete all of the work and then transport the car to a location that provided free A/C inspections. If it passed, I would order them to charge it
  • Nonetheless,

92dlxmandrinking whats on sale

  • Date of joining: June 24, 2012 Member:81250 Messages:1,447 Gender:Male Kevin is my first name and I live in Visalia, California. Using the vehicle:08 access 4×4 4.0 6-gear5100s, ome884s, wheelers aal kit, and rustoleumi are some of the parts used. My understanding was that any malfunction the system detected and immediately shut down would result in a flashing air conditioning light on the dash. When you press the button, it responds with ‘na,’ meaning ‘I don’t want to run,’ and a blinking light indicates that it is shutting down. My understanding is that this is the case, and I am not claiming it to be reality. It’s difficult for me to fathom why there is a leak in the evaporator. Even if the coil itself is leaking, I’m not sure why replacing the txv would be necessary. Also, use caution while dealing with your neighbor. Refrigeration systems are easy for me to build and maintain, but diagnosing and repairing automobile systems is a completely different story. ensure he has a vacuum pump, a r134 manifold, and nitrogen on hand if possible If someone intends to fix your system without at the very least those three items, he should be given a firm ‘no thanks.’

Mandy3206Well-Known Member

  1. Date of joining:June 4, 2009 Member:18031 Messages:279 Gender:Male San Juan, Puerto Rico Automobile:Sand Pearl Black 06 6spd DC SB TRD OR Modified My neighbor has all of the equipment necessary to complete the job and has experience working with mini-split systems
  2. However, he does not work on automobiles
  3. However, if I rip the dash apart and gather all of the parts, he will complete the job for me
  4. However, I must be certain that the evaporator is the problem, which will be determined by the diagnostics that will be performed next week. If I charge it myself with an apep boyskit of gas and oil without the sealants, I’d want to know if the gas exits soon or if it remains there for a long period of time. What do you think?

A/c compressor wont engage, blower motor wont come on, condensor fan cuts off

A/C compressor will not engage, the blower motor will not turn on, and the condensor fan will not turn on. Originally Stopka has posted a message. On ohms, I receive an O.L. As a result, I may conclude that the circuit has been closed. This indicates that the original transistor was functional. Most meters display the symbol OL, which stands for ‘over limit’ or ‘open circuit.’ The same as when your meter leads are not contacting anything, which indicates that the meter is open. There is no continuity inside the fuse because of a bad fuse.

  1. When your meter leads come into contact with each other, the result is zero.
  2. That could at the very least inform you whether your new transistor is defective without having to open it up and test it.
  3. A defective fan motor pulling too many amps might break the fuse, and running hot as a result of clogged cabin filters could also cause the fuse to explode.
  4. Using a jumper wire to connect to the battery for a few seconds, I’ll test to see if I can get the air conditioning and blower motor to switch on quickly on low.
  5. Is it possible to see some photographs that demonstrate how to achieve this?

AC Compressor not engaging

June 20, 2014, 11:53 a.m. Initiator of a thread, Junior MemberJoined on June 14, 2014 Posts: 2Likes: 0Received 0 Likeson0 Posts: 2Likes: 0Received 0 Likeson0 Posts: 2Likes: 0 The air conditioner’s compressor is not working. My V50 is a 2010 model. The air conditioning was working properly until all of a sudden it stopped working. The air conditioner compressor will not turn on, there is no clicking or anything, and the green light illuminates the button when it is turned on and orange when it is turned off.

  1. So far, the only thing I’ve done is double-check all of the fuses.
  2. I’d want to check the relays, but I’m not sure how to go about it.
  3. 20th of June, 12:30 p.m.
  4. Date of joining: June 2014 Posts: 2Likes: 0Received 0 Likeson0 Posts: 2Likes: 0Received 0 Likeson0 Posts: 2Likes: 0 It reached 100 psi when I tested the pressure on the device, which was a pleasant surprise!
  5. Date of joining: November 2012 Posts: 5Likes: 0Received 0 Likeson0 Posts: 5Likes: 0Received 0 Likeson0 Posts: 5 The 100 psi pressure is enough for the outdoor temperature, which was around 85 degrees Fahrenheit (29C).
  6. This pressure switch is in charge of controlling the on-off clutch cycle of the air conditioning compressor.
  7. If there is voltage present, connect the two wires together and the A/C clutch should engage.
  8. If the clutch engages, this indicates that the pressure switch is faulty.
  9. The plug on the A/C compressor should also be checked.

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How to Diagnose a Non Working Air Conditioning in a Car

Documentation Download Documentation Download Documentation Driving about in a hot car on a hot day without an operational air conditioner may be uncomfortable, and in extreme temperatures, it can even be deadly. It is important to discover the cause of your air conditioning system not working in order to determine whether the problem is one that can be fixed at home or whether you need to take it to a repair company. Additionally, if you already know why your air conditioner is not functioning, you are less likely to be taken advantage of at a repair business.

  1. 1 Start the automobile and turn on the air conditioning while it is running. It is not possible for the air conditioner to function effectively unless your motor is running. While driving, the optimal setting for diagnosis is ‘fresh air’ (not recirculated), with air flowing out of the central vents in the dash and the air conditioning switched on.
  • Set the fan speed to the highest level when you first turn it on. If your vehicle has a ‘Max AC’ setting, make use of that setting.

2Pay attention to any unexpected noises coming from the air conditioner. Noise might signal that your compressor is having a problem and that it needs to be repaired or replaced. Advertisement 3Feel the air rushing out of the vents as it comes in. You’ll need to know if the air is cold, room temperature, or hotter than the air surrounding it in order to determine its temperature. It’s also important to observe if it starts off chilly but then warms up, or whether it’s normally warm but blows cold periodically.

  1. Change the air pressure between the high and low settings to check if the airflow varies in the same way it does ordinarily.
  2. In the event that you notice odd odors, you may have a leak.
  3. 6Inspect the fuses in your vehicle.
  4. It is possible for your air conditioner to cease operating due to a blown fuse.
  1. 1 Examine each and every vent. Check to see that the air pressure coming out of the vents you’ve chosen is satisfactory. Move the vent selection around to see if the air is being sent to the appropriate vents.
  • First, make sure that all of the vents are functioning properly. Check to see that the air pressure coming out of the vents you’ve chosen is sufficient. Observe whether or not the air is channeled via the appropriate vents by moving the selection lever.
See also:  Fix a Flat — Does it work?

2 Check the cabin air filter on your vehicle. Check the air filter, especially if the air coming from your vents smells strange or if you believe you have been experiencing a gradual drop in pressure for a long period of time. You will be able to tell whether it has a buildup of dirt or debris on it because of the magnifying glass.

  • Your cabin air filter may be clogged to the point that it is interfering with your air pressure, and replacing it will be a reasonably simple and affordable solution to your problem. It’s possible that your car’s owner’s handbook contains instructions for replacing the cabin filter. Try searching online for ‘replace cabin air filter’ followed by the year, make, and model of your car (for example, ‘replace cabin air filter for 2006 Toyota Camry’)
  • If that doesn’t work, try calling the manufacturer.

3 Look for signs of a malfunctioning blower motor. The quickest and most straightforward method of accomplishing this is to turn on your heat. If you have poor air flow even when the heat is turned on, it is possible that your blower motor has failed.

  • If your air blows only on the highest level and not on the lesser settings, it is possible that your blower motor has a resistor problem. Unfortunately, mice and other rodents have been known to construct homes in automobile air conditioning hoses and become entangled in the blower motor when the vehicle is started. When the heat or air conditioning is operating, a loud noise (or a foul smell) may indicate the presence of a problem.
  1. 1Look for the front of your air conditioning condenser. It is usually found just in front of your radiator, as the name implies. If there are any leaves or other debris or accumulation obstructing it, remove it and clean the surrounding area
  2. 2 Look beneath the hood for the clutch on the air conditioning compressor. A compressor malfunction might be the cause of high temperature in the air even when the pressure is normal. Visual inspection is all that is required to determine whether or not the compressor clutch is engaged. It is common for the compressor to be situated nearer the front of your engine, right within the grill of your vehicle.
  • Your vehicle should be operating with the air conditioning turned on in order to examine the compressor clutch. The compressor has the appearance of a little engine with a huge wheel attached to the end. If the wheel (which is also known as the compressor clutch) is rotating, everything is working well. There is something wrong with your compressor if it is not rotating.

3Inspect the tension on the compressor’s belt for proper operation. It should be a close fit. If the compressor belt is slack, you will need to replace it. 4 Look for any leaks in the cooling system. Low refrigerant levels are one of the most often encountered AC temperature issues. Because the air conditioning system is shut off, no refrigerant should be lost unless there is a leak.

  • Look for greasy residue on or around the hoses that connect the various components of the air conditioning system. A refrigerant leak might be indicated by oily stains. You might want to investigate utilizing an electronic leak detector, which can detect considerably lower amounts of refrigerant than a mechanical one. There are also some testers who utilize dye, ultraviolet light, and protective glasses to detect leaks
  • These are called leak detectors. You will almost certainly need to engage a professional to repair any leaks that you discover on your own. You will almost certainly require replacement parts as well, as many of the components cannot be fixed or patched.

5 Make sure there is no freezing. If your air conditioner blows cold at first but then stops blowing cold after a while, it might be freezing inside. If there is an excess of air and moisture in the system, this might cause components to freeze (literally).

  • It is also possible to have freezing due to an oversaturated receiver/drier or accumulator. Turning off the system for a short period of time and allowing it to thaw will temporarily address the issue. It is possible that your system will require flushing or evacuation using a vacuum pump if the problem is severe and chronic.

Create a new question

  • Question Is it possible that a faulty temperature sensor is causing the AC not to work? Ed Beery is an automotive specialist and the owner of InTechgrity Automotive Excellence in Denver, Colorado. He has over 20 years of experience in the automotive industry. He has more than eight years of expertise in offering maintenance and repair services to both people and businesses. Eddy and the Automotive Excellence Team at InTechgrity have been approved for repairs by the American Automobile Association (AAA) and have earned the Automotive Service Excellence (ASE) certification. Expert Answer from an Automotive Specialist Definitely! If the temperature sensor does not provide a signal, the air conditioner will not operate. It’s important to remember that these sensors are hidden deep within your HVAC system, below the dashboard, and that they might be difficult to access and replace
  • Question What is the best way to test a mix door? Ed Beery is an automotive specialist and the owner of InTechgrity Automotive Excellence in Denver, Colorado. He has over 20 years of experience in the automotive industry. He has more than eight years of expertise in offering maintenance and repair services to both people and businesses. Eddy and the Automotive Excellence Team at InTechgrity have been approved for repairs by the American Automobile Association (AAA) and have earned the Automotive Service Excellence (ASE) certification. Expert Answer from an Automotive Specialist Start your car and turn on the air conditioning with the fan set at the highest setting. Then, using the selector choices on your HVAC control, cycle through each setting, feeling for chilly air in each position. The temperature sensor in the position that does not blow cold air may be malfunctioning, while the blend door actuator in the position that does not blow any air may be malfunctioning. QuestionHow can I determine if my air conditioning fan is in need of repair? Ed Beery is an automotive specialist and the owner of InTechgrity Automotive Excellence in Denver, Colorado. He has over 20 years of experience in the automotive industry. He has more than eight years of expertise in offering maintenance and repair services to both people and businesses. Eddy and the Automotive Excellence Team at InTechgrity have been approved for repairs by the American Automobile Association (AAA) and have earned the Automotive Service Excellence (ASE) certification. Expert Answer from an Automotive Specialist Your air conditioner’s fan will either have irregular air movement or may have no air movement at all. What are the signs that my pulley is damaged? Ed Beery is an automotive specialist and the owner of InTechgrity Automotive Excellence in Denver, Colorado. He has over 20 years of experience in the automotive industry. He has more than eight years of expertise in offering maintenance and repair services to both people and businesses. Eddy and the Automotive Excellence Team at InTechgrity have been approved for repairs by the American Automobile Association (AAA) and have earned the Automotive Service Excellence (ASE) certification. Expert Answer from an Automotive Specialist When the AC clutch is engaged, the pulley either does not revolve or turns in an inconsistent manner
  • Question What happens when an air conditioning belt fails? Ed Beery is an automotive specialist and the owner of InTechgrity Automotive Excellence in Denver, Colorado. He has over 20 years of experience in the automotive industry. He has more than eight years of expertise in offering maintenance and repair services to both people and businesses. Eddy and the Automotive Excellence Team at InTechgrity have been approved for repairs by the American Automobile Association (AAA) and have earned the Automotive Service Excellence (ASE) certification. Expert Answer from an Automotive Specialist When the air conditioning is switched on, you may hear a high-pitched scream or chirp coming from the belt. It is possible that the system will experience intermittent cooling when the belt gets and loses traction
  • Question What is the best way to tell if my air conditioning clutch is bad? Ed Beery is an automotive specialist and the owner of InTechgrity Automotive Excellence in Denver, Colorado. He has over 20 years of experience in the automotive industry. He has more than eight years of expertise in offering maintenance and repair services to both people and businesses. Eddy and the Automotive Excellence Team at InTechgrity have been approved for repairs by the American Automobile Association (AAA) and have earned the Automotive Service Excellence (ASE) certification. Expert Answer from an Automotive Specialist One of the most common indications that you have a faulty air-conditioning clutch is that it does not engage when you turn the AC on (and voltage is present)
  • That the clutch clicks or bangs when you turn the AC on but does not engage when you turn it off
  • That the clutch slips in and out of gear when the AC is turned on
  • And/or that the vehicle idle decreases noticeably when you turn on the AC. Question What is the best way to tell whether the gas in your car’s air conditioning is running low? Ed Beery is an automotive specialist and the owner of InTechgrity Automotive Excellence in Denver, Colorado. He has over 20 years of experience in the automotive industry. He has more than eight years of expertise in offering maintenance and repair services to both people and businesses. Eddy and the Automotive Excellence Team at InTechgrity have been approved for repairs by the American Automobile Association (AAA) and have earned the Automotive Service Excellence (ASE) certification. Expert Answer from an Automotive Specialist It is possible that there is insufficient or no gas if air is flowing throughout the system when the AC is turned on
  • The air is not cold or cool and does not become cold or cool anywhere in the system
  • The compressor is turning
  • The AC clutch is not making noise
  • And the AC clutch engages when the AC is turned on
  • And the AC clutch is not making noise
  • Question Is it possible for your air conditioning to stop working because of a blown fuse box? Yes, if the fuse that supplies power to your air conditioning compressor or relays blows and is not supplying +12VDC, you will be without air conditioning. Question What should I do if my air conditioner isn’t blowing air? It’s possible that a fuse has blown or that the blower motor has failed. Ensure that your fuses are properly installed underneath your hood, and that your glove box is free of any cylinder-shaped motors. While the air conditioning is running, gently wriggle the cord to check for a short in the adaptor. If this does not work, you can use a fuse tester to determine whether or not the blower motor is receiving power. Question My truck’s heat works
  • It defrosts, but only on the third and fourth settings. It only blasts hot air on the third and fourth channels. I’ve tried putting coolant in it, and it works for a few seconds before shutting down. I looked for leaks, and there are none to be found. What do you recommend I try next? If your air blows only on the highest level and not on the lesser settings, it is possible that your blower motor has a resistor problem.

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  • Unless you are very certain that low refrigerant is the source of the problem, do not add additional refrigerant since overfilling the system with too much refrigerant can cause serious damage. When making repairs to your car, it is always advisable to speak with a professional. Wearing safety eyewear and working in an open atmosphere where fumes won’t overwhelm you are both recommended precautions. After handling Freon or other chemicals, avoid putting your fingers in your eyes or mouth. Always wear long sleeves and gloves if at all feasible.

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About This Article

Summary of the ArticleXTo determine why your car’s air conditioning isn’t working, start by turning on the ignition and cranking up the air conditioning to its maximum level. If your air conditioner is making weird noises, it is possible that there is a problem with the compressor, which will need to be repaired or replaced. A low level of air pressure emanating from the vents may indicate that the cabin air filter or the blower motor needs to be replaced or repaired. If the air coming out of the vents is warm, it is possible that the coolant is leaking or that the AC condenser needs to be cleaned.

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