2000 Chevy Silverado Low idle

122,000 MILES • V8 • 4WD • AUTOMATIC
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COALHANDLER
  • MEMBER
  • 1 POST
starts instantly when truck has been sitting over night and engine is cold,idles as it should. When you run it for awhile and try to restart it, it cranks for 4 or 5 seconds and then idles very slow, around 450-500 rpm.
Sep 25, 2008 at 2:16 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check the coolant temperature and throttle position sensors, idle air control valve.
Sep 25, 2008 at 11:20 PM
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