2006 Hummer H2

Tiny
PREM
  • MEMBER
  • 2006 HUMMER H2
  • V8
  • AWD
  • AUTOMATIC
  • 25,000 MILES
Hi, I have 2006 hummer h2 and only 25000 miles. Engine running rough for more than a year. Went to the dealer he says there is no any code. Can anybody help to find the problem. Its not running smooth. And how can I find out if there is problem with the exhaust valve. Thanks
Wednesday, October 21st, 2009 AT 6:40 PM

1 Reply

Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
If it is running rough, or misfiring, it should be visible on a scan tool, and should set codes. A scan tool that shows misfire counts would offer some insight. Other things that could indicate are fuel trim values. Another possibility is that a catalytic converter could be restricting. Any of these would set an applicable fault code as they all would affect emissions.
Was this
answer
helpful?
Yes
No
Thursday, October 22nd, 2009 AT 12:30 AM

Please login or register to post a reply.

Related Cylinder Head Valve Content