Symptoms of a Bad or Failing Fuel Pump Relay

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Cost of Replacing a Bad or Failing Fuel Pump Relay

If the engine is stalling or not starting, or the fuel pump is not making any noise when the key is on, you may need to replace the fuel pump relay. Our certified technicians can come to you and diagnose the problem. You will receive a $30 credit towards any follow-up repairs that result from the diagnostic. Following are example prices for Fuel Pump Relay Replacement. Click on the button below to get an upfront quote for your car.

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2007 Chrysler Town & Country $97 $26.58 $70.00 27% $134.08
2010 Dodge Nitro $96 $25.60 $70.00 28% $133.10
2007 Chevrolet Silverado 3500 Classic $92 $21.58 $70.00 29% $129.08
2005 Cadillac XLR $96 $26.04 $70.00 28% $133.54
2009 Infiniti G37 $90 $20.38 $70.00 29% $127.88
2008 Mercedes-Benz SL55 AMG $107 $36.60 $70.00 26% $144.10
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How to Diagnose a Bad or Failing Fuel Pump Relay?

fuel relay

The fuel pump relay is an electronic component that is found on virtually all vehicles equipped with an internal combustion engine. It is often found in the fuse box located in the engine bay and functions as the primary electronic switch that controls power to the fuel pump. The fuel pump relay is usually controlled by the ignition or Powertrain Control Module, and when switched on, will provide current to the fuel pump so that it may function. As the fuel pump relay controls power to the fuel pump, any faults with it can cause issues with the fuel pump, which can cause drivability problems for the vehicle. Usually a bad or failing fuel pump relay will produce a few symptoms that can alert the driver of the issues.

1. Engine stalls

One of the first symptoms of an issue with the fuel pump relay is an engine that suddenly stalls. If the fuel pump relay has an issue while the vehicle is operating it will cut off power to the fuel pump, which will cause the engine to stall. A faulty relay may allow the vehicle to be restarted a short while later, while a completely failed relay will not.

2. Engine does not start

Another symptom of a faulty fuel pump relay is an engine that does not start. If the fuel pump relay fails the fuel pump will be left without power. The engine may still crank when the key is turned, however it will not be able to start due to lack of fuel. This symptom can also be caused by a wide variety of other issues, so having the vehicle properly diagnosed is highly recommended.

3. No noise from the fuel pump

Another symptom that may hint at an issue with the fuel pump relay is no noise from the fuel pump when the key is switched on. Most fuel pumps will produce a low volume hum or whine which can be heard from the inside the vehicle if listened for closely, or from the outside of the vehicle, near the fuel tank. If the fuel pump relay fails, it will cut off power to the fuel pump which will render it inoperable, and therefore silent, when the ignition is on.

While the fuel pump relay is a very simple component, it plays a very important role in the proper operation of the vehicle. If your vehicle is displaying any of the symptoms above, or you suspect that your fuel pump relay is having an an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if the component should be replaced.

electrical system
relays
fuel system
fuel pumps

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Recent Fuel Pump Relay Replacement reviews

Excellent Rating


YourMechanic Fuel Pump Relay Replacement Service

Average Rating

4.7/5

Number of Reviews

22

Rating Summary
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Joseph

15 years of experience
115 reviews
Joseph
15 years of experience
Joe was very prompt, courteous and professional. He went my car very thoroughly and found two relays not picked up by other mechanic and also found that my serpertine belt had to be replaced which again the other mechanic did not replace when he on the new alternator. He spent time on the ground, in the rain and showed up for his appointment when we had an ice storm. He was honest with diagnosis and pricing. Would recommend him highly.
2005 FORD FOCUS - FUEL PUMP RELAY - PARKVILLE, MARYLAND

David

13 years of experience
339 reviews
David
13 years of experience
Quick repair, convenient service...thanks again
1993 OLDSMOBILE CUTLASS CIERA - FUEL PUMP RELAY - SACRAMENTO, CALIFORNIA

Tyrone

8 years of experience
402 reviews
Tyrone
8 years of experience
great service very professional
2006 CHRYSLER 300 - FUEL PUMP RELAY - CLINTON, MARYLAND

Steven

18 years of experience
198 reviews
Steven
18 years of experience
Showed up early. Quickly found the problem and got it solved. Great experience all the way around!
2002 FORD F-150 - FUEL PUMP RELAY - GRAPEVINE, TEXAS

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