Questions & Answers for: Pontiac rough idle

2000 Grand Am rough idle it has 84000 miles. when in gear idles rough, when in park doesn't idle as rough. check vacuum hoses

Rough Idle 2000 grand am, 85,000. i've put a new fuel filter, had it checked and they said it was missing so i replaced plugs and wires, didn't help. then was told had a vacuum leak on fuel injector, ...

...idle real rough and the rpm's will go real high them back down to normal then high agian the check engine light will come on then after about 3 starts the light will go out but every morning the same ...

...Rough Idle In Drive Only Runs good with plenty of power when driving. Runs smooth at an idle when in Park, Neutral and Reverse. Only runs rough at an idle in drive. I had the same problem with '99 GA ...

Rough Idle In Drive Only the car runs finewhile you are driving and idles fine in Park, Neutral and reverse but when it is in drive it runs rough or vibrates. It doesn't quit running, just feels rough

...when i come to a stop and a rough idle i changed the tps Idle air control valve would be my next bet , the TPS usually just makes it rough on acceleration. Is it rough on acceleration(loss of power)

...rough at idle and at speed. The Car is running rough at idle and at speed. The voltmeter seems to drop down at idle also. I don't believe it is a spark plug or wire. Help! try the coil pack migh be ...

idle very rough let sit 1 hr. started and ran fine drove 10 miles or so turned off sat 15 min. same very rough idle let sit over night restart ran fine could it be fuel pres. reg. or check valve check

Rough idle? car will not idle? Erratic idle speed? http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html -------- High rpm in neutral? Inconsistant high RPM in neutral?

...idle picks up after a few seconds . The basics for a rough idle, check for a leak of some kind, fuel--egr--vacuum leak. Check and clean anything to do with idle air system. How long since a