1998 Chevrolet Tahoe Q&A

1998 Chevrolet Tahoe Question: rough idle

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. -
Answer 1
sounds like a plug or coil failure. you need a shop to verify and give you a bid. Roy -
Comment 1
What do you mean by a coil failure? -
Comment 2
ignition coil. there is one for each cylinder and it could be failing by not firing the spark plug. Roy -
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