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02-10-2005, 09:21 PM
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#1 | |
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AF Newbie
Join Date: Feb 2005
Location: Chandler, Arizona
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99 Grand Am Rough Idle in Drive
I have a 99 Grand Am 4 cyl DOHC, automatic transmission and I have been having a problem with rough idle/vibration while at idle in drive. The second I shift into neutral, park, or reverse the vibration stops. While driving everything seems normal.
I have had the MAP sensor check out, No EGR on the car, a tuneup and transmission service done. Any ideas on the problem would be helpful! Thanks ahead of time! Mary Phoenix AZ |
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02-12-2005, 07:56 PM
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#2 | |
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Fight the powwa!!!
 
Join Date: Feb 2004
Location: Lakewood, New Jersey
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Re: 99 Grand Am Rough Idle in Drive
Welcome to the forum. Have you checked for codes or do you have your check engine light on?
John
__________________
RIP Hypsi - I just want to express I will never be the same after having lost such a good friend. You meant alot to me and I feel I am a better person for having known you. Til the day we meet again my friend you will always be in my heart. Mods: Weight reduction (I don't wear underwear) |
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02-13-2005, 02:06 AM
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#3 | |
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AF Newbie
Thread starter
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Re: Re: 99 Grand Am Rough Idle in Drive
We checked for codes but none are showing up on the scanner and the check engine light is off.
Mary Phoenix AZ |
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02-13-2005, 04:40 AM
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#4 | |
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Fight the powwa!!!
Join Date: Feb 2004
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Re: 99 Grand Am Rough Idle in Drive
Well sounds like 1 our 3 things to me. 2 have to do with the same thing. I think it could be carb deposits on your throttlebody or IAC casing too much air to enter and a idle surge/causing roughl idle. Your throttlebody attachment screw is misadjusted if you have one or you have a vacuum leak. Could be a great many things but that what I would look into first. Good luck.
John
__________________
RIP Hypsi - I just want to express I will never be the same after having lost such a good friend. You meant alot to me and I feel I am a better person for having known you. Til the day we meet again my friend you will always be in my heart. Mods: Weight reduction (I don't wear underwear) |
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