Hi, just had a similar problem with a 2002 V6 Camaro,
if your plugs and wires are fine, replace the coils. I had a similar problem, especially when engine was warm and under load (with air cond or many people in car). Trouble codes won't tell you if coils are bad, and testing them with an ohm meter won't do you any good. They are cheap on eBay. I replaced all 3 on my car for $60 and a half hour of labor.
Friday, July 9th, 2010 AT 7:38 PM