Rough Idle


Old 02-12-03, 01:30 PM
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Join Date: Jan 2002
Location: Baytown, TX
Posts: 71
Rough Idle

My 1999 Pont. Gran Am, 4 Cyl, auto has a rough idle. I have recently replaced the air filter and fuel filter since it was time and hoping that would cure the rough idle. I looked at the throttle body and there was a lot of carbon. I used a suggested cleaner and cleaned this up. Still no change.

Any suggestions for me to check out?


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Old 02-12-03, 01:31 PM
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