Q: Fuel pump relay location.

asked by on November 27, 2016

So, my symptoms first were : car starts, rough idle, dies. Now, no start, no noise from fuel pump when ignition is "on" position. Should I test the fuel pump relay before taking it to dealer? And where is the relay, doesn't show in the manual where it is. Thanks for your help .Jack

My car has 45000 miles.
My car has an automatic transmission.

Car is not starting Inspection $79.99 - $89.99 Get a Quote

Relays are always a good location to test a system. You are on the right track in that respect. Unfortunately, your car does not have a traditional fuel pump relay. It has what is known as the Fuel pump driver module. The good news is it is a little easier to test the fuel pump from this location as there are only a one ground and power circuit you will need to pay attention to when testing the fuel pump.

Before we go there, you need to know that the fuel pump will only cycle for around two seconds when the key is first turned on. When cycling the key, it will need to be in the off position for as long as five minutes. This means you will need someone to be low on the ground as close to the fuel pump as the key is turned on. If you don’t hear the fuel pump then use a hammer to pound on the bottom of the fuel tank while someone is cranking the key. Fuel pumps have a tendency to stick and can be jarred loose with a hammer. If this works, it means you need a fuel pump. Remember, you need to pound on the bottom of the fuel tank while cranking the motor.

If you do all that and the car still doesn’t start, I would connect a fuel pressure gauge under the hood to be absolutely certain. Then I would access the power and ground circuit from the fuel pump driver module. It is located on the right side of the luggage compartment. It is under the carpet. Making sure you have located the correct module requires a wiring diagram. With this you can compare the wiring harness colors and wire locations to confirm you have accessed the correct module. You will also use the diagram to test power and ground circuits to the module and the fuel pump.

When it comes to vehicle information, I recommend a one car yearly subscription with AllData for $16.95. AllData.DIY This will give some of the most accurate information about your car.

If you would like to book an appointment with us, I recommend the following inspection to help you out. Car is not starting

Good luck!

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

I have a p0410 code yet my air pump does operate however the flow doesn't seem to be very strong?

There is probably a filter in the pump and yes the filter could block flow. However, before you consider a plugged filter, inspect the check valves; they will commonly get plugged up or stuck. The pump flow is minimal and...

Steering wheel jerking

Hello. There are several things that could be causing the problem you are having with your steering wheel. This could mean that you have a bad outer or inner tire rod, your lower control could be bad, or that there...

I have a 2002 chevy s10 pickup and while im driving 60mph my rpm will go up to 3000 and the engine will tev but the mph stays the

Hi Mari. Thanks for sending your question to us today. In most cases, a lack of acceleration like you're describing is due to the transmission slipping. Sometimes this is due to dirty transmission fluid while in other cases, it's a...

Battery light illuminates at 70 mph and turns off once vehicle speed dips below 60 mph.

Make a note of what rpm the engine is doing when you are at that speed causing the light to come on. With the car stopped in park, see if you can rev the engine up to that speed and...

2001 Chevy Malibu lights turn on but won't start

It sounds like what you are describing may be related to a faulty starter relay. The starter relay directs power from the battery to the starter solenoid which then engages the starter when you turn the key. When this is...

After an Auto shop repaired my 2002 monte carlo ls 3.4L exaust manifold gasket and a tune up, ever since car hasnt been running?

Hello, thank you for writing in. Unfortunately your situation is going to require a second mechanic to inspect the vehicle. The biggest issue concerns the "tune up", as we do not know exactly what they did during that process. Tune...

Why does my Tahoe start with the fuel pump relay pulled out or left in?

Hi there. Check to see what relay you have pulled. If indeed you removed the fuel pump relay and the engine still starts up, then check the oil pressure switch. An oil pressure switch will kept the engine running as...

How much oil does 1970 Chevy c10 350 take?

With a filter change, the crankcase capacity is 6 quarts. If the filter is not changed add 5 quarts (the filter holds 1 quart). Note that you should check the dipstick and regardless of the specification do not maintain the...

do i need to take my car to BMW for an oil change or brake fluid flush

In regard to your question, the criteria of relevance insofar as "who" should work on your car is simply that the person you select is appropriately trained, skilled, as knowledgeable as possible, knows how to follow instructions, and is conscientious,...

Related articles

The Best Used Cars to Buy If You Live in a City
Living Living and driving in the city means you’re faced with parking constraints, narrow streets, and the constant stop and go of traffic. With all of that said when you’re ready to purchase a used vehicle these are all things...
A Buyer’s Guide to the 2012 Chevrolet Camaro
The The 2012 Chevrolet Camaro is an exciting car that says a lot about American drivers and what we want. While fuel prices are high and the economy is just barely starting to resurge and stabilize after years of recession,...
A Buyer’s Guide to the 2013 Subaru BRZ
This This sports car for the everyday man or woman is an irresistible combination of style, handling, and just plain fun. The BRZ offers a respectably good time on the way to work or on the way around the race...