Question about 1991 Pontiac Grand Prix

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My 1992 Pontiac Grand Prix will not idle

I replaced the starter so had the battery disconnected for a couple of days. Now the car starts and runs fine but will not hold idle when foot is off the gas. no vacum lines off that I can see. Is this a computer issue? Did the battery being disconnected make the computer "forget something?" Help

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The computer probably need to relearn the idle-try driving the car for 20-30 minutes,i u can. if that doesnt work,try keeping the car in drive at idle speed if possible without touching the gas pedal-even though it might stall,see if eventually the idle will raise up on its own.hope this helps you.

Posted on Sep 03, 2009

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Posted on Jan 02, 2017

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SOURCE: 1992 grand prix wont hold idle

I replaced a motor in a 97 and the engine was out for a few weeks and I never had a problem with an idle when I put it back together with a whole new engine. I would guess you forgot to plug something back in by the starter. Recheck everything you have done I think this is something simple.

Posted on May 23, 2009

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