rough idle on stock car

[01GT281]

I started my car today and noticed it had a rough idle. It was idling ~ 600-800 RPM. All I have is a K&N filter (for now) and was wondering what the problem could be. I was told that i might have a COP gone bad and not firing. It idles so rough the car shakes and feels like it could die. Surely this is not normal for a stock engine. Oh yeah, my car is only 3 weeks old w/40k miles - 01GT

 

[40th GT]

Have you checked the IAC? It might be time to change it.

 

[Figment]

I started my car today and noticed it had a rough idle. It was idling ~ 600-800 RPM. All I have is a K&N filter (for now) and was wondering what the problem could be. I was told that i might have a COP gone bad and not firing. It idles so rough the car shakes and feels like it could die. Surely this is not normal for a stock engine. Oh yeah, my car is only 3 weeks old w/40k miles - 01GT

i have a 04 gt with rough idle, the dealer keeps telling me its normal.

 

[Jesus]

My 03 idled rough for a few months and then smoothed out. Not sure what fixed it, could have been the weather I guess. Or, the car just had some learning to do. Dealer also told me it was normal. Car runs fine, so I guess it wasnt a big deal.