Running Rough - Suggestions Welcome [Archive] - GrandAmGT.com Forum

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FrozenEntity
02-14-2011, 04:45 PM
I'm not too mechanically inclined, but here's an overview of what i've observed.


Running rough, is noticeable in Park, Neutral, and Reverse, but as soon as you shift into Drive, 1st, 2nd, or 3rd, the noise becomes twice as loud.

Whenever the car is stopped, and i accelerate, I hear a short clunk or knock as soon as i get above 5 mph, maybe while it's shifting.

The car randomly misfires, The only time it consistently does it is usually going up hills.


I'm not sure if one problem is dependent on the other or if they are all connected but any input anyone has would be greatly appreciated.

madmike77
02-16-2011, 03:57 PM
iac valve it cost about 30 bucks and is on the top of the engine 2 screws to replace it . i would start there!

madmike77
02-16-2011, 04:00 PM
i had the same problem last year car shifted hard and would stutter at about 2500 rpm's if you dont have the cash take it off and clean it should get you by for about a year!