Question about 1997 Pontiac Grand Prix

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1997 grand prix very ruff idle no power changed cps and checked injetors and fuel pressure was 46-50 psi. have great spark to all cylinders

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Rough idle and no power, it could be the mass air flow sensor, or even an intake leak (vacuum). Either one I would not put passed an engine of its age. I hope this helps point you in a helpful direction. Let me know how it goes and which motor you have as well.

Posted on Nov 06, 2010

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I have a 1997 grand prix gtp.it has been misfiring for the past few weeks. i had it scanned and it said #6 is misfiring. i have changed the plug, plug wire, coil pack, and injector and it is still missing....


if as soon you give gas it dies i would check the gas pressure it should be about 50 psi if it good check the compression on that cylinder thats a start let me no

Mar 03, 2009 | 1997 Pontiac Grand Prix

1 Answer

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

1 Answer

Fuel pressure


With the 3.1 engine: Ignition on 52-59 psi, at idle 42-56 psi. With the 3.8 engine: Ignition on 48-54, at idle 38-51. Let me know if your's is supercharged the specs maybe different.

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have you replaced the fuel filter if you have may have a problem with the exhaust being plugged if you haven't replaced fuel filter try that

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