2002 Chevy Avalanche missfire

Tiny
KARLWL
  • MEMBER
  • 2002 CHEVROLET AVALANCHE
  • V8
  • 4WD
  • AUTOMATIC
  • 165,000 MILES
Engine displays error code missfire.
idles rough and problem is worse in colder temps
Friday, November 21st, 2008 AT 8:07 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi:
Were you able to determine which cylender was the problem? It could be a few things causing the problem, but most common is a weak coil pack in the affected cylender. I also could be a fouled spark plug. Was the engine tuned reciently?

Let me know if you have any other info.
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Saturday, November 29th, 2008 AT 5:32 PM

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