Question about 2004 Pontiac Grand Prix

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2004 grand prix wont go on high idle on cold start up. it starts when you touch the gas peddle but idles low.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: Over heating at idle

You did exactly what I would do (and the dealer repair guy for that matter) by going after it thru the bottom of the headlight housing. But if you aren't having any luck finding it then I would go ahead and remove the bumper so you can have a better look at whats behind there. I have a 2004 cherokee too and that's where mine was. Hope this helps!

Posted on Aug 08, 2008

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SOURCE: 1995 ford escort idle problem

The IAC valve is usually the problem with the 1.9 Escorts ,causing a very poor engine idle at a stop. It is located on the side of the throttle body .

Posted on Aug 25, 2008

  • 82 Answers

SOURCE: 1989 honda prelude enigne idles high then low irratic

I had the same problem on a Rover. There was a leak in inlet manifold that was caussing the problem.
To verify, spray some sealant to temporarily seal the inlet manifold .and the eratic idling should disappear for some time.
If it does, you know there is leak in inlet manifold which you can take of and refit with a new gasket.

Posted on Oct 27, 2008

  • 1201 Answers

SOURCE: grand prix wont idle

There are 3 things that should be checked.
The idle air control valve (some call it a fuel bypass valve)
Throttle position sensor
and a fuel pressure test done. The idle air control is usually mounted on the throttle body, so is the tps which has a black plastic casing. good luck.

Posted on Jan 25, 2009

rockitman187
  • 2559 Answers

SOURCE: I HAVE A 2003 PONTIAC GRAND PRIX, I HAVE REPLACED

EGR valve

Posted on May 06, 2009

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1 Answer

Why wont car stay running


Because the idle of the engine is to low most likely a bad idle air control its a little sensor near the air duck hose on the throttle body itself it hapen that when the battery was disconnct or down good luck and please rate the answer

Jan 08, 2014 | 2004 Pontiac Grand Prix

1 Answer

My 97 grand prix idles fast when i start it, normally, if i let it run for a little bit, i can shut the engine off and restart it and it gets better...any ideas?


It runs fast because the choke and or high idle are set. This is normal, after it warms up, give it a little gas and let off, it should idle down.

Jun 06, 2010 | 1997 Pontiac Grand Prix

1 Answer

1999 pontiac grand prix 3.1 starts great but sputters throttling


check tps sensor check idle air control valve or iacv for proper func

May 03, 2010 | 1999 Pontiac Grand Prix

3 Answers

I have a 97 grand prix gtp that will start but wont hold an idl


bad fuel pump.- just replace it and your good to go!

Feb 21, 2010 | 1997 Pontiac Grand Prix

1 Answer

My car wont start unless i give it gas. it wont keep idling without my foot kept constant on the peddle.


have you replace the fue filter? a sticking iac sensor can also cause problems starting also check the air flow sensor

Nov 23, 2009 | 1997 Pontiac Grand Prix

3 Answers

I have a 2004 grand prix gt and sometimes on start it stalls


Take your car to a dealer and tell them to "clean the throttle body" Known problem for this year. It will solve your issue.

Nov 01, 2009 | 2004 Pontiac Grand Prix

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Engine will start at very low idle, sometimes killing, then may fast idle, then low idle, back and forth. What may cause this?


check and make sure air filter is ok, and there are no restrictions in hose to throttle body, check iac (idle air control.

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1 Answer

2004 jeep grand cherokee idling problem


check your throttle position sensor and idle air control solenoid.

May 14, 2009 | 2004 Jeep Grand Cherokee

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