Example: Sitting at stop lite.Idle starts to run rough in drive position,but when gear is moved to either neutral or park, runs smooth.
Chevrolet Q&AAsk Your Question
1998 Chevrolet Tahoe Question: rough idle
Answer #1mastertech6371 June 21, 2011, 12:29Master
sounds like a plug or coil failure. you need a shop to verify and give you a bid.
ReplyThomas J Baynon, June 21, 2011, 12:35Rookie
What do you mean by a coil failure?
Replymastertech6371, June 21, 2011, 12:58Master
ignition coil. there is one for each cylinder and it could be failing by not firing the spark plug.