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IDLE

Tiny
STRUXGL
  • MEMBER
  • CHEVROLET SILVERADO
I have a 2000 Silverado with 86000 miles. It is a 4x4, 5.3 engine.
When I first start it in the morning it idles normal, about 500 but after driving a few it idles anywhere from 1000 to 1500. I can turn off the engine and it once again will idle fine until I drive it a few miles. Any suggestions?
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Sunday, September 16th, 2007 AT 11:04 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Try checking the throttle position sensor and clean out the idle air control valve, also the throttle body/plate and a binding throttle cable.

I almost forgot about the coolant temperature sensor-test its resistances hot and cold-could be stuck in the open loop mode and the computer is dumping fuel thinking the engine is still cold.
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Monday, September 17th, 2007 AT 2:57 AM

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