Skip the auto shop - Our mechanics make house calls

Q: Car only runs when jumper the fuel pump

asked by on

The fuel pump in my car isn’t getting any volts. The following have been replaced in my car:

  • fuel pump
  • fuel pump basket
  • fuel pump driver module
  • fuel filter
  • starter

My car will only run if I jumper the fuel pump, since it hasn’t been getting any volts. Please give me advice on what to do to about the fuel pump. Thanks.

A: Check to see if you are getting power when ...

Check to see if you are getting power when you test the green with orange stripe wire going to the fuel pump module. If you have no power then check the the fuel inertia switch, in the left kick panel, by the drivers foot, and see if the inertia switch is not tripped. If it is, reset it and the pump should work.

If the switch is okay then make sure it has power to it and from it, when cranking the engine. If you have no power then check the fuel relay and see if it has power to it and that it’s being turned on when you crank it. If you do not then you may have an issue with the computer not activating the fuel pump. This will require a scan of the system and in-depth tests further than the scope of what this diagnoses is capable of. You will need a wiring diagram to follow and a scanner to activate the relays to test the system.

If you decide to get this fixed, contact a certified mechanic who can perform all of these checks in order to find the root of your starting problem. Once this is done, an accurate repair can be made.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
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

Get a quote

What others are asking

Q: Truck cranks runs a few seconds and stops.

Hi there. Check the fuel filter on the vehicle and see if its plugged up. If the fuel filter is good, then check the fuel pump and see if its working and pumping fuel to the engine. If the fuel...

Q: Car shakes when going over 60 MPH

This sounds like you have a problem with the front axles or speed sensors, along with front bearings failing. I recommend that you have a mechanic, such as ones from YourMechanic, come by and check your car for you, beginning...

Q: Car wont stay running

Hi There, It sounds like you may have a dirty or faulty idle air control valve or potentially a bad fuel pressure regulator or fuel pump. The idle air control valve monitors the air intake as it is mixed with...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...