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2003 GMC C1500 Rough Idle

Tiny
MLAUCK11
  • MEMBER
  • 2003 GMC C1500
  • V8
  • 4WD
  • AUTOMATIC
  • 64,000 MILES
When I start my truck in the morning the idle is rough and it feels like it is going to stall out. I replaced the fuel filter did not fix problem. Once it is warm up the problem goes away. Any ideas?
Saturday, February 2nd, 2008 AT 10:59 AM

1 Reply

Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
These engine have problems with carbon build up. Usually running high pressure injection cleaner through the fuel rail usually fixes it. You need a special set up to do this procedure. Also you could have a bad coolant temp sensor.
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Saturday, February 2nd, 2008 AT 11:13 AM

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