How to know if fuel pump is faulty or not

Asked by Dec 27, 2014 at 05:18 PM about the 1992 Pontiac Grand Prix

Question type: Maintenance & Repair

No fuel comes out of fuel output line from fuel tank

4 Answers


Do a fuel pressure test. If in USA auto zone will loan you what you need to test it. Small deposit required.


First start with the fuel pump relay in the fuse box under the hood. If it's good then turn everything inside the car off. Turn the key to the run (not start/crank) and listen for the whine of the pump as it primes. If you don't hear it the pump is probably shot. You can access the pump through the trunk and don't have to drop the tank to change it.

1 of 1 people found this helpful.

Oh crap. I blew that answer. Was not paying attention I quess. Thanks for sending them down the right path transam77. Good job.


Thanks, I think we were typing our answers at the same time. LOL

1 of 1 people found this helpful.

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