Question about 1997 Pontiac Grand Prix

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Had a bad fuel pump on my 97 Grandprix GTP replaces fuel pump and spliced in the new plug that came with it , now it will run for about 20 min are so till warm then just shuts down. When i have the ignition on the on postition Fuel pump kicks in and out along with my Tach, check engine light, low fuel light, oil light, etc. Like some one is turning the key off and on fast . Iam lost i respliced thinking had a bad connection same thing happened. Plesae help ...TY FYI did check all fuses and main relays. What else am i missing. TY

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  • ergjensen May 09, 2009

    lossened the fuel cap this did not help, i guess i should say once its cooled down it seems to start again and run till it get warmed up . ???

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Try losing your fuel cap, it sounds like its vapor locking!!!!!!!

Posted on May 09, 2009

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I have a 1997 Pontiac Grand Prix GTP. Recently put new fuel pump not even 3 months ago. New fuel filter as well same time. 2 weeks ago from today was going about 55 to 65 mph oil light comes on and car...


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Known GTP problem.

You most likely have a bad fuel pump resistor, which controls 2 speeds of the fuel pump.

To check to see if this is the problem, there is a trick you can do and its very easy to do. Go to the attached link, and bend the tab my finger is pointing at and then plug it back in. If your car starts and runs fine, well we just solved the problem.

Link ->> http://www.boredandstupid.com/relay.jpg

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My GTP runs 15 mins and looses fuel pressure.. Fuel pump is new


Heres what you need to do to start with. If you are mechanically inclined, when it stalls, check for spark on the #1 cylinder. If you have no spark there, it is likely the CPS or Crankshaft Position Sensor has gone bad, a common issue, and will need to be replaced.

If you need any further help, there is an online Grand Prix community you can check out at http://www.grandprixforums.net. Sign up there and post up your issue and you will get some more input.

Feb 02, 2009 | 1997 Pontiac Grand Prix

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