Fuel pump whine — diesel engines? (Best solution)

The whining noise may be caused by a damaged fuel pump. The fuel pump may be punctured or dented, reducing its efficiency. To resolve this issue, the fuel tank must be accessed and repaired or removed. The location of the fuel tank depends on the construction of the vehicle.

  • A whining fuel pump may also be a sign that other parts of the car are damaged. If a hose that transfers fuel to the engine or carburetor is damaged, it will release air into the fuel system and reduce the pumping pressure, resulting in the noise. If a connection is loose between the fuel pump and any other part, the same result may occur.

How do I stop my fuel pump from whining?

Helpful tips on how to quiet a whining fuel pump

  1. Fill Up The Tank. The easiest solution is to fill up the tank.
  2. Check for Contaminated Fuel.
  3. Replace the Fuel Pump.
  4. Fix the Loss of Pressure.
  5. Sound Insulate the Pump.

Is my fuel pump supposed to whine?

A Low Humming Sound Is Normal A fuel pump should make that noise. Most people never notice it, because they’re not trying to listen to it. The pump is driven by an electric motor, so of course it will always hum softly when in use.

How do I know if my diesel fuel pump is bad?

Seven Signs Your Fuel Pump Is Going Out

  1. Sputtering Engine. Your fuel pump is telling you something if your engine starts to sputter once you’ve hit the top speed on the highway.
  2. Overheating Engine.
  3. Low Fuel Pressure.
  4. Power Loss.
  5. Surging Engine.
  6. Gas Mileage Decrease.
  7. Dead Engine.

What are the symptoms of a bad fuel injection pump?

Here are a few signs there might be something wrong with your fuel injectors.

  • The Engine Misfires. Dirty fuel injectors may cause your vehicle’s engine to misfire.
  • Idling Gets Rough.
  • Your Gas Mileage Tanks.
  • The RPM Needle Starts to Dance.
  • Your Car Won’t Start.

Why is my fuel pump making a humming noise?

It’s normal for a fuel pump to make a low humming noise, and you might be able to hear it coming from the gas tank area. As a pump begins to wear out, that sound can turn into more of a whining or droning. A lack of fuel can cause the engine to misfire.

Does high-pressure fuel pump make noise?

The components of the fuel system, namely the fuel pump, high-pressure fuel pipes and injectors act as sources and radiators of noise.

Can a fuel pump humming but not pumping?

K.I. Answer: Fuel pumps often emit a humming sound, so that does not necessarily mean yours is ready to fail. It’s often difficult to diagnose when a particular part is going to fail because of an abnormal noise. Even if the pump has become noisy, you may find that it continues to work fine for quite a while.

How do you test a diesel fuel pump?

– Use a fuel pressure gauge: Attaching a fuel pressure gauge to the pulse hose coming out of your fuel pump will help you show if your fuel pump is putting out the right pressure. Any reading below your manufacturer’s specifications means you probably have a defective fuel pump diaphragm or check valve.

What happens when a diesel injector pump fails?

Bad fuel injection timing may lead to low engine performance and can cause the engine to misfire. It can also cause overconsumption of fuel, loss of power, and excess smoke production.

What Causes a Fuel Pump to Whine?

1 Preventive maintenance visits must be performed within two years or 24,000 miles of the vehicle’s delivery, whichever occurs sooner. In accordance with the BuickComplete Care program, all 2018 Corvette cars are entitled to three service visits. Note that air filters are not included. Other limitations and comprehensive details are available from the participating dealer. Maintenance must be performed within the first year of receiving the vehicle. Oil and filter change, tire rotation, and MPVI are all included in the service visit.

Other limitations and comprehensive details are available from the participating dealer.

The Mobil1 ®Oil and Filter Change/MPVI service visit is comprised of the following items: Note that air filters are not included.

Maintenance must be performed within the first year of receiving the vehicle.

Note that air filters are not included.

Maintenance must be performed within 24 months of the vehicle’s delivery date.

Note that air filters are not included.

Low Fuel

In order to function, fuel pumps must pressurize the gasoline before delivering it to the engine. The engine may have to work significantly harder if the fuel level is low in order to produce the pressure necessary to push the gasoline through the system. Start the automobile while the gasoline is low (less than one-fourth tank) and listen for the sound to determine the source of the problem. If the whining can be heard, fill the tank as soon as possible. As soon as you restart the car, the whining should have diminished or disappeared.

Damaged Pump

The whining sounds might be caused by a faulty gasoline pump, according to the manufacturer. The fuel pump’s efficiency may be reduced if it has been punctured or damaged. The gasoline tank must be opened and either fixed or removed in order to remedy the problem. The position of the gasoline tank is determined by the vehicle’s design and construction. It is common for the fuel pump to be situated outside of the gasoline tank in vehicles that are equipped with carburetors. When a vehicle is equipped with a fuel injector, the fuel pump is housed within the tank.

Impurities in Gas Tank and Engine

A faulty fuel pump might be the source of the whining sounds. Fuel pump efficiency might be reduced if it has been pierced or damaged. Fuel tank access and repair or removal are required in order to remedy this issue. Location of the gasoline tank is determined by the vehicle’s design and construction.

It is common for the fuel pump to be situated outside of the gasoline tank in vehicles equipped with carburetors. Typically, the fuel pump is positioned inside the tank of a vehicle equipped with a gasoline injector. A mechanic should be called in to deal with this issue.

Other Damaged Parts

A whining fuel pump might also be a symptom that other components of the vehicle are malfunctioning. A broken fuel transfer pipe that transports fuel to the engine or carburetor will allow air to enter the fuel system, reducing the pumping pressure and causing the noise. This can also happen if a connection between the fuel pump and any other component is not properly secured. Damage to the car should be assessed by a specialist who can determine the extent of the damage and recommend appropriate repairs.

  • Delmar Learning’s Chilton Auto Repair Manual 1998 – 2002 was published in 2003. Auto Repair for Dummies was written by Deanna Sclar in 2009
  • Chilton Auto Repair Manual 1998 – 2002 was published in 2003 by Delmar Learning.

Morehouse College’s Phi Beta Kappa honors program and an English degree have helped Jeremy Cato establish himself as a successful writer in the Atlanta area. The author, who is an active artist and hobbyist, began writing professionally in 2011, focusing on craft-related pieces for a variety of websites.

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A gasoline pump, whether electric or mechanical, is a necessary component of all modern automobiles. An engine or carburetor is fueled by a mechanism that distributes fuel from the gas tank to the engine. If you notice any peculiar sounds coming from your car while it is in operation, such as high-pitched whining or buzzing, it is likely that something is wrong with the fuel pump. The failure of a gasoline pump can cause significant damage to internal automotive components, which is why it is critical to detect and correct the problem as soon as possible.

Get to know the fuel pump

If you wish to find a remedy to a malfunctioning automotive part, you must first understand the fundamental functions and rules that govern that part’s role and purpose. The mechanical fuel pump, which is often seen on older automobiles, is mounted on the engine block, whereas the electric fuel pump is located within the gas tank. The fuel pump is responsible for delivering gasoline from the gas tank to the engine. You will hear a low buzzing as soon as your car is started since the pump is triggered when the vehicle is started.

Why is Your Fuel Pump Making Whining Noise

You are aware that it is quite unusual for a car to suddenly stop operating without warning. There is always a valid rationale for why anything is taking place. When it comes to fuel pump problems, these are the kind of scenarios that cause the fuel pump to become loud.

  1. The most common cause of whining noise is a lack of fuel supply. The lower quantity of gasoline makes it more difficult for the engine to operate, which is why you should never allow the tank run completely dry, but should instead replenish it when the gauge drops below one-fourth of its capacity. It’s possible that something else is going on if the whining sound is still there. It’s possible that the next explanation is a broken pump. The effectiveness of the pump is reduced by dentures and punctures. This is an issue that may be resolved by the individual or by hiring a technician to complete the task. The third reason is contaminated gasoline, which is distinguished by a distinct grinding sound that can be heard as soon as the tank is filled with such fuel. The fourth reason has to do with contaminants, such as dirt, engine muck, and other similar substances that might be discovered in the tank or engine. This is likewise an issue that necessitates the services of a mechanic. Another typical cause of malfunction is a lack of power from the pump, which occurs when the vehicle does not get enough power from the pump. Despite the fact that the pressure is soon restored, it may be preferable to inspect and replace a pump
  2. And, eventually, it is possible that additional broken sections of the pump will cause the pump to perform incorrectly. If you hear whining, it’s possible that a hose or a loose connection or anything similar is the cause.
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How to recognize a malfunctioning fuel pump?

Considering the fact that this automobile component carries a great deal of duty, it is not uncommon for it to require replacement. When that moment is approaching, the car will provide alerts. Here are some examples of signals that should be recognized: The whining noise is unquestionably the most distinguishing indication. The sound of a worn out or old pump can be described as follows: It is normal for a properly functioning fuel pump to emit a low-level humming; however, if you hear an extremely loud whining, it is likely that the fuel pump has to be replaced.

When the ignition is turned on, the fuel pumps are always running.

In turn, the car will take numerous turns of the key before it will finally start; if the pump has been damaged much more severely, it will be impossible to start at all.

The loss of power and acceleration, the stalling of the engine, the misfiring of the ignition and the reduction in fuel economy are all possible consequences of a defective pump.

Whatever indication you’ve seen, the first thing you should do is take your vehicle to a repair. Any problem with the car must be resolved as soon as possible; otherwise, it may result in more problems that will need more time and money to resolve and will cost more money.

Helpful tips on h ow to quiet a whining fuel pump

Finally, the time has arrived for which you have been waiting. Here is a list of all of the answers that came to my thoughts when I was thinking about how to solve this nerve-wracking situation. It is certainly beneficial to be aware of all the possible reasons and treatments when a problem with the fuel pump develops in your car, no matter what the situation is.

1. Fill Up The Tank

This is it; the moment you’ve been waiting for has finally arrived. Listed below is a comprehensive list of all of the answers that came to mind when I was thinking about how to resolve this nerve-wracking situation. In any case, understanding all of the various reasons and remedies for fuel pump problems, as well as what to do when a fuel pump problem develops, would be quite beneficial.

2. Check for Contaminated Fuel

In the last section, we discussed the grinding sound that indicates that the gasoline may be polluted, which implies that a mechanic must inspect it. It is common for gasoline to get contaminated by water, and when this happens, the distinctive grinding sound may be heard when the fuel is injected into your vehicle’s engine. The first thing to do is to turn off the engine as soon as possible, and then call a towing company to have the car transported to a repair. Additional problems are likely to occur if a vehicle is used for an extended period of time with tainted fuel.

3. Replace the Fuel Pump

In addition to being a high-usage component of your car, the fuel pump will ultimately need to be replaced. Even if you have the highest-quality fuel pump available, the time will come for it to be replaced. If you follow my advise, it is far preferable to have it replaced as a whole than than having separate sections repaired. Even if you save a few dollars, your pump will not survive indefinitely, which is why it is far preferable to get a new one instead. They are not too costly, and this is clearly the simplest approach.

On YouTube or the Internet, you may discover a plethora of excellent videos and directions.

Don’t forget to bring along the necessary tools, such as a fuel pressure tester, voltmeter, and other similar devices!

4. Fix the Loss of Pressure

Whining and halting noises may also be signs that the pressure has been lost and that it is time to restore it. Even though the car may be able to continue driving for a few seconds after receiving these warnings, keep in mind that the pump will need to be repaired. One or more of the following factors may contribute to the problem: limited fuel line; weak pump; blocked pump intake strainer; filthy fuel filter; and inappropriate tank venting. A fuel pump pressure tester is used to verify the fuel pump pressure before moving on to any further steps in the process of finding a solution.

The most frequently encountered problem is a malfunctioning pressure regulator; thus, get it changed, either by a technician or by yourself, as you see fit!

5. Sound Insulate the Pump

However, if none of the issues listed above are present and the pump continues to whine, it’s possible that it’s simply a noisy one. In such case, I have a solution for you as well! Insulate the pump with some soundproofing material, and the noise will be greatly decreased. You may use an insulating mat that is self-adhesive to keep your home warm. They are made to endure high temperatures as well as loud noises, and they can be applied to any surface without leaving any residue. A coating or two of silicone on a gasoline pump should be sufficient to resolve the problem.

You may also utilize Dynamat to your advantage.

Fatmat comparison page for more information.

Final thoughts on a whining Fuel pump

I’ve done my best to compile all of this information in one convenient location to assist you in dealing with this situation. I understand how inconvenient this noise can be, so I’ve attempted to compile as many reasons and remedies as possible in order to cover all of the bases as thoroughly as possible. A responsible driver must be familiar with the operation of his or her vehicle and must take proper care of it. When a car sends signals, it is our responsibility to follow them. If you ask me which one is my favorite, I’d say pump replacement since it’s the simplest and most secure, but that’s just my opinion.

You might also be interested in:

  • Undercoating for automobiles Is Soundproofing Effective in Reducing Noise? 8 Noise Reduction Techniques for Soundproofing Your Jeep Wrangler Acoustic Windshield: What is it, what are the benefits, and how well does it work? Learn how to silence a car exhaust without sacrificing performance. Sound Deadening Car Doors – A Step-by-Step Guide to Soundproofing Your Vehicle

15 minutes are allotted for active time. 15 minutes is the whole time allotted.


  1. Fill the tank with gasoline and inspect it for contaminated fuel. It is necessary to replace the fuel pump. Restore the pressure to the system
  2. Soundproof the pump


1. There is insufficient gasoline. 2. Pump that has been damaged 3. Fuel that has been contaminated. Impurities are the fourth type of impurity. 5. A decrease in pressure 6. Other sections of the pump that are damaged

New Fuel Pump Noise? Here’s What You Want To Check

Does the gasoline pump in your freshly installed vehicle make unusual noises? The following are some of the possibilities for why a brand new fuel pump is producing odd noises:

  1. Fuel pump that is not working properly
  2. Contaminated fuel filter
  3. Low gasoline tank level
  4. Contaminated fuel

A Low Humming Sound Is Normal

Low gasoline tank level; contaminated fuel; faulty fuel pump; contaminated fuel filter;

1. Loose Fuel Pump

Whining, droning, and moist spitting are the most prevalent sounds. Was the pump installed and tightened in the right manner? A gasoline pump that is a little out of alignment may create a lot of sound. Whether you believe that this is the source of the noise coming from your fuel pump, you may check to see if it is loose. If this is the case, tightening it (or reinstalling it) should eliminate the humming.

2. Contaminated Fuel Filter

Whining, droning, and moist spitting are some of the most typical noises you may hear. What about installation and tightening the pump? Was it done correctly?

A gasoline pump that is a little out of alignment can produce a lot of noise. It is possible to check if the fuel pump is loose if you believe that this is the cause of the noise coming from the fuel pump. The noise should be eliminated if the screw is tightened (or reinstalled).

  • Starting the engine is difficult
  • The engine runs rough
  • Acceleration is sluggish.

The only method to determine whether or not a polluted gasoline filter is at the base of the problem is to inspect the filter itself. If you discover that it is clogged, you should replace it. The noise from the gasoline pump should be gone.

3. Low Fuel Tank Level

Whining, buzzing, and humming are the most prevalent sounds. Do you have a bad habit of driving on a full tank of gas? In the event that you do not frequently fill your gas tank to the brim, the pump may overheat. It is for this reason that the fuel pump is located within the gas tank. The fuel contributes to the cooling of the fuel pump. When your gas tank is consistently low (below 1/4), the fuel pump suffers from excessive heat, which causes it to wear out sooner. Do you have a suspicion that your fuel pump is creating noise because it has become too hot to operate?

4. Contaminated Fuel

Whining, buzzing, and humming are the most prevalent sounds. Any gasoline that contains contaminants such as dirt, metal shavings, or rust will have a detrimental impact on the performance of the fuel pump. The gasoline pump is only capable of handling liquid fuel; it cannot handle dirt or other particles. Are any of the following indications, in addition to high-pitched whining or buzzing noises, present in your home? It’s possible that you have tainted fuel in your tank.

  • The engine is making unusual noises. Engine misfiring
  • Inefficient fuel economy
  • Difficulty starting the engine

Rusty engine operation Engine misfiring; inability to start the engine; poor fuel efficiency

Fuel pump whine — diesel engines

To remedy a whining fuel pump issue on their 2010-20 diesel cars, General Motors has issued service bulletin 18-NA-103 to their dealers. The whining of the fuel pump may also be accompanied by one or more of the following fault codes: P0087 Low Pressure in the Fuel Rail Performance of the P018B Fuel Pressure Sensor P228A Control of the Fuel Pressure Regulator 1 (FPR1) – Engine Shutdown by Force P228B Control of the Fuel Pressure Regulator 2 (FPR2) – Engine Shutdown by Force P2635 Operation of the fuel pump’s flow rate

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Also interesting: Fuel pump whine — diesel engines? (Best solution)

Cause of fuel pump whine

GM has found that diesel fuel gelling at freezing temperatures is the root cause of the fuel pump noise and hard starting, as well as the associated fault codes given on the GM website.

Background on diesel fuels

Blending 1 and 2 diesel fuels for seasonal requirements in a specific location is the responsibility of fuel distributors. You should always use the gasoline that is rated for the temperatures in your area of the country. Allowing summer diesel fuel to linger in your tank through extreme cold cycles without adding a winter fuel anti-waxing or icing additive is not recommended. The anti-gelling additive you use must not contain any metal-based additives, alcohol, or other types of water emulsifiers, among other things.

Diagnose diesel fuel pump whine and hard start due to fuel gelling

Bring the car indoors and let it to warm up to at least 0°C (32°F) before driving away. It might take many hours to complete this task. Then attempt to start the engine again. Using a scan tool, keep track of the data from the fuel temperature sensor. If the engine starts, empty the water separator located at the bottom of the fuel filter and replace it with fresh water.

If the whining sound from the gasoline pump has disappeared, it is likely that the fuel was the source of the problem. The year is 2021. Rick Muscoplat is a professional musician. Rick Muscoplat posted a blog entry on

Three Reasons the Fuel Pump Can Be Noisy

Carry the car into the house and let it warm up to at least 0°C (32°F). It might take many hours to complete this process completely. Afterwards, attempt to start the engine again. On a scan tool, look at the data from the fuel temperature sensor. If the engine starts, empty the water separator located at the bottom of the fuel filter and replace it with new water. If the whining sound from the gasoline pump has disappeared, it is likely that the fuel was the source of the problem. 2021 is the year in question.

Rick Muscoplat wrote a post on

Types of Fuel Pumps

Fuel pumps are available in two varieties: mechanical and electrical. The mechanical fuel pumps are mounted on the engine block for easy access. They function similarly to a piston in that they transport gasoline from your vehicle’s gas tank to the carburetor. Many older factory engines will have a mechanical performance fuel pump, which is more efficient. The failure of the fuel pump might result in the fuel flowing straight into the carburetor, causing the pressure balance of the fuel pump system to be disrupted.

The gasoline pump is located on the inside of the fuel tank.

Because the engine, the tank, and the fuel pump all work in concert, any problem can result in the failure of the entire fuel system.

Reasons for the Noise

  1. Gas is running low – If you hear a whining sounds, it is possible that your fuel pump is working more hard than it should. Riding on ‘E’ will put a tremendous amount of strain on your gasoline pump. If your automobile is producing this noise, don’t wait until your tank is almost completely depleted before doing action. When your gas gauge hits one-fourth of its capacity, it’s time to fill it up. In the event of pressure loss, your car may lurch forward, making a stalling sound, and then continue to drive as normal. This issue indicates that your car does not have enough power flowing from the fuel pump to perform properly. The pressure will normally return to normal within a few seconds, but you may need to look for a new fuel pump to replace it. Fuel Contamination – If your fuel is polluted, you may notice a grinding sound. Additionally, you may encounter engine stalling and hard starts. If the fuel you poured into your tank was tainted, you’ll know practically quickly after filling up your tank.

Gas is running low — If you hear a whining noise, it is possible that your fuel pump is working harder than it needs to. It is quite stressful for your gasoline pump to be riding in ‘E.’ You should not wait until your car’s fuel tank is nearly empty before taking action. When your gas gauge is one-fourth full, it’s time to fill it up. Failure to apply force to the gas pedal might cause your car to lurch forward, make a stalling sound, and then drive normally again. It signifies that your car is not receiving enough power from the fuel pump when this failure occurs.

It is possible to hear grinding noises if your gasoline has been polluted by foreign matter.

If the fuel you poured into your tank was tainted, you’ll know practically quickly after filling your tank.

Fuel Pump Whine? (video)

Please accept my apologies for not responding to this sooner. This noise, which may be heard at both the secondary fuel filter housing and the primary filter housing/pump (DFCM), as illustrated in the video, has been determined to be produced by air entering the system. Pump inlet constraints can also cause air to be drawn through seals, causing them to fail. Because they are both on the intake side of the fuel pump, the o-ring on the fuel filter bowl (cap on the DFCM) and the water drain o-ring need to be checked.

If possible, use clean diesel fuel or clean engine oil to lubricate the o-rings before installing the filters.

Keep in mind to prime/purge the system before starting the engine by cycling the ignition key from off to on for 30 seconds, six times, before turning on the engine.

As a result, the fuel pump may make a growling noise when operating (DFCM).

Add-on filtration systems, switches, valves, tanks, and so on, as well as any other vehicle modification that may crush, kink, or damage the fuel lines, causing a limitation or allowing for air intake, are prohibited from being used in conjunction with gasoline. Best of luck on your journey!

Low pressure fuel pump whine

14th of December, 4:01 a.m. FiendThread Starter is a post FiendThread starter. Date of joining: January 2009Location: Greenwood, South Carolina Number of posts: 6,665Number of likes: 0 Received 1 Like on a single post The whining of a low-pressure gasoline pump It was just yesterday that the pump began emitting a rather loud hum sound. I can’t sleep because I have to tow the RV down to Disney on Thursday for a week-long vacation that has been planned and anticipated for almost two years and has already been paid for in full.

  • Hopefully, I will be able to locate and install a pump today; however, if I am unable to do so, can someone persuade me that I can do it on the side of the road?
  • 12:00:45 a.m.
  • Is it possible that it’s just becoming clogged up?
  • Post FiendJoined in January 2008 and is based in Georgia.
  • Is it possible that it’s just becoming clogged up?
  • Are you certain that the noise is coming from the pump?
  • Date of joining: March 2013Location: EC Iowa 6,274 total posts Joel, all you have to do is fetch the pump and turn it on.

12:00:40 a.m.

Iowa Ford originally posted this message.

You won’t be able to stop thinking about it until you’ve completed it.

14th of December, 11:39 a.m.

14th of December, 11:51 a.m.

Date of joining: January 2009 Greenwood, South Carolina is the location.

1 Like was received on a single post.

The next step is for me to refuel the diesel engine and assess if the situation has improved.

The next morning, after cleaning the dpf, I returned to the shop and they gave me the gasoline filters, ordered the pump, and told me that I would just have to pay for the filters the next time I visited them.

14th of December, 11:53 a.m.

A parking lot would be an excellent location for such a terrible incident if it ever occurred.

Joined in July 2005, located in Middle Tennessee, with 13,808 posts and 0 likes.

They are really simple to alter.

You’re referring to the pump or the filters, aren’t you?

The Post FiendThread StarterJoined the group in January 2009 and is based in Greenwood, South Carolina.

According to what I’ve read, it’s a possible side-of-the-road repair.

The Super Moderator joined in August 2008 and is based in Frederick, Maryland.

My first course of action would always be to replace the fuel filter.

on December 14, 2016 Post FiendJoined on September 2006 Cartersville, Georgia is the location.

You’re referring to the pump or the filters, aren’t you?

If new filters did not eliminate the whining, and a thorough inspection of all of the connections did not resolve the problem, I would just replace the unit.

on December 14, 2016 The Post FiendThread StarterJoined the group in January 2009 and is based in Greenwood, South Carolina.

Fresh filters were all that was required, which seemed strange to me given that it had only been 7500 miles since I had previously changed them.

Didn’t I always hear that being organic meant more filter changes?

on December 14, 2016 The Super Moderator joined in August 2008 and is based in Frederick, Maryland.

14th of December, 2016 at 8:24 p.m.

Number of posts: 36 0 Likes have been received.

It made me quite worried since I was constantly concerned that it would allow me to sit down the side of the road with my trailer and stuff.

I updated the filters, and the problem was resolved. I believe I had traveled around 8,000 miles since my previous oil change. Having a ’11 has never caused me any problems. Having said that, it only takes one faulty tank of petrol to cause serious issues for a driver.

Diesel Fuel Gelling in Cold Temperatures Causing In-Tank Fuel Pump Whine and Driveability Concerns – 2010-2020 GM Passenger Cars & Trucks

NHTSAID Identification Number: 10163226 18NA103 is the manufacturer’s communication number. A siren or whining sounds from the in-tank fuel pump at temperatures below -6C or 20F, coupled with start and stall, no start, loss of power, and the MIL lit, is addressed in this bulletin to alleviate customer concerns. Technicians may discover DTCs P0087, P018B, P228A, P228B, or P2635 in the ECM, which indicate a problem with the ECM. There are 91 products that are affected.

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Due to the rising expectation of customers for a quiet and comfortable ride, automotive manufacturers must continue to work on improving the noise, vibration, and harshness (NVH) of automobile powertrains. The modern client has grown so sensitive to vehicle-related noises that in-tank fuel pump noise is no longer an exception to the checklist for evaluating cabin noise, vibration, and harshness (NVH). The in-tank fuel pump, which is responsible for transporting fuel from the fuel storage tank to the delivery rail, is powered by an electric motor that is connected to the rail.

Due to the fact that noise is fundamentally an audible vibration at its core, these structure-borne vibrations may be interpreted as noise within the passenger compartment.

This study discusses several ways for reducing the noise created by the gasoline pump that may be heard within the passenger compartment.

Based on multiple iterations undertaken at the gasoline pump level, the fuel tank level, and the pipe arrangement, the following techniques have been formalized.

Both subjective feelings and objective data measurements were used to evaluate the outcomes of the study. Furthermore, the study discusses the use of CAE tools to find resonant sites, which is another topic covered in the paper.


In ‘Approaches of NVH Improvements for Fuel Pump Noise Issues,’ H. Aneja, M. Tripathi, H. Singh, and A. Parmar, ‘Approaches of NVH Improvements for Fuel Pump Noise Issues’ (SAE Technical Paper 2017-01-0442), SAE Technical Paper 2017-01-0442, 2017.

Data Sets – Support Documents

  1. A study on the noise produced by electric in-tank fuel pumps was conducted by Lake (V.). SAE Technical Paper870982 (1987)
  2. Rossetti, T., Del Passo, M., and Geremias, F. Fuel Pump Module Noise Optimization by Design of Experiments (Rosetti, T., Del Passo, M., and Geremias, F., 1987). SAE Technical Paper2013-36-0625 2013 10.4271/2013-36-0625
  3. SAE Technical Paper2013-36-0625

Cited By

A noisy buzzing in-tank fuel pump arose in my 2005 Sprinter T1N, which was transporting an Itasca Navion and had only 53k miles on it. I did this for a number of trips over the course of about a year, until the CEL/SES light turned on and the vehicle went into limp mode. My OBDII code scanner read P0087 (low fuel pressure) and P2047, which are both trouble codes. I was able to clear the errors and get back to driving normally. Whenever I attempted to climb a steep incline and pressed the gas pedal to the floor to push the turbo into boost, the identical problem would occur.

  • On level ground or moderate gradients, I was able to maintain highway speeds without incident; however, maintaining highway speeds on grades resulted in the CEL and P0087/P2047 codes.
  • A creeper was placed under the gasoline tank, and I started the engine while listening to or feeling the tank.
  • I’d never heard a gas in-tank pump make such a loud noise before, and I couldn’t fathom why a diesel in-tank pump would be even louder.
  • (It’s rather simple to lower the tank if it’s nearly empty.) A photo of the pump assembly shows that the electric motor for the pump is located in the middle of its lower part, toward the bottom of the canister’s lower section.
  • A little amount of it was scoopable with a screwdriver, and it turned out to be a slurry of rubbery-feeling particles that clung together in the same way that wet sand does when it’s wet.
  • So I went over to the gasoline collection tube and had a peek at the other end of the tube.
  • I’ve included a photo of it for you.

I couldn’t make out any of the characteristics of the underlying strainer.

It’s also possible to view what this gunk looks like.

I can readily assume that this filth, which is apparently also abundant within the tank, clogged the fuel pump’s intake strainer to a significant degree, as it did in my case.

Even at the most basic level of operation, the blocked intake would make the fuel pump work considerably harder and perhaps cavitate, resulting in the audible buzzing, as well as obstructing fuel flow.

As a result, the buzzing and CEL P0087 codes are probably definitely the result of this.

In any case, my query is as follows: Is this the first time anyone has observed this type of contamination?

This is my first RV and my first Sprinter experience, and I purchased this rig secondhand, with only 53k miles on it, like I mentioned.

How could this much sludge accumulate in such a little distance? Is it possible that someone used contaminated biodiesel? What is the community’s experience with gasoline pollution of this nature, and what is the source of the contamination? Thanks.

(Probably) Aux fuel pump buzzing/whining – impending doom? 2.0 CBAA

An auxiliary gasoline pump that is buzzing or moaning – a sign of imminent doom? CBEA 2.0 is a comma-separated list of acronyms. I was driving in my automobile yesterday when I heard a whining sound coming from the passenger side of the vehicle. At speeds more than 40 mph, it is too quiet to be heard, although it is extremely noticeable at idling. The noise is coming from the aux fuel pump, according to my investigation (which included using a huge hemostat as a ‘stethoscope’). The pitch of the noise does not alter with engine speed, but when I engage the power windows or spin the steering wheel, the noise pitches down for a small period of time – I believe this is connected to voltage, which may dip from both the power windows and the steering wheel.

Aside from the sound, there are no noticeable concerns, and I’m not interested in running it any longer, especially if I can avoid a catastrophic failure that sprays metal fragments everywhere and causes other problems.

Although I intend to examine the gasoline filter in broad daylight tomorrow, I’m not sure what measures I should do after that.

Is that intended to be a sealed compartment?

Having owned the car for around 15,000 miles, I assumed that it had received its prior maintenance around that time, since the DSG fluid had been replaced.

(I apologize for the ‘CBAA’ in the title; I attempted to fix it but was unsuccessful.) It’s a CBEA, by the way.)

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