2000 Chevy Silverado Start-up idle speed

Tiny
CORT321
  • MEMBER
  • 2000 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
  • 114,000 MILES
When starting on a cold morning my engine idles very rough (high to low surging) almost to the point of shutting down. I will use the foot pedal to maintain ~1500 rpm for a minute or so until the engine maintains idle on it's own. After beginning the trip the engine runs fine. The truck has been running fine since purchasing new. I gave it an engine tune last year. Thanks for your help.
Dan
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Tuesday, January 22nd, 2008 AT 8:21 AM

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Tiny
MERLIN2021
  • EXPERT
Check your ECT, that's the engine coolant temp sensor...it acts like a choke for FI vehicles...


http://www.2carpros.com/forum/automotive_pictures/62217_2000ECT_1.jpg

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Tuesday, January 22nd, 2008 AT 8:28 AM

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