2007 Pontiac Grand Prix not starting

Asked by Aug 22, 2019 at 04:47 PM about the 2007 Pontiac Grand Prix

Question type: Maintenance & Repair

I got this grand Prix that's a 07 and it was
running fine the last few times I drove it but
it's been sitting for a year now and won't
start. It acts like it's not getting any gas but
there's a half of a tank I put in there when I
got the vehicle, around a month ago. I can
hear the pump turn on and I changed my
relays and the problem still continues. The
check engine light came on and I had
someone get the code from it and it says it's
a fuel pressure problem, is it my pump or my

2 Answers


" drove fine , , sat for a year , got it a month ago " ? ? ? ? ? Check the fuel pressure with a gauge , if you have the lines apart purge the line and see what comes out , gas that sits for a year is probably no good ,

1 people found this helpful.

You probably have water condensation in the gas tank. Try spraying a little starting fluid down the throttle body. If it runs on that it's definitely a fuel problem. Put a bottle of Drygas in the gas tank. For future reference always fill up the gas tank with premium fuel if you plan on not using the vehicle for an extended time period. Especially if it's going to be sitting over the winter months. Hope that helps! Jim

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