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1997 Chevy Truck hIGH iDLE

Tiny
SHAKKEY13
  • MEMBER
  • 1997 CHEVROLET TRUCK
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 117,984 MILES
In the summer my truck's idle would start at 1000RPM on start up and would settle after 5 min at 600 rpm

Now winter has come its always -3 Celcius out and now its starts a 1000RPM and wont settle at 600 rpm now it sits a 1000-900 but will settle when engaged into ODrive goes to normal 600 rpm new EGR valve last summer
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Thursday, December 10th, 2009 AT 12:45 PM

2 Replies

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Take out the idle air control motor. Its gonna have to idle a bit higher for longer due to the temperature now.

Clean up the iac when you get it out. Also start checking for vaccum leaks. Use a can of carbuerator cleaner.
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Thursday, December 10th, 2009 AT 4:26 PM
Tiny
SHAKKEY13
  • MEMBER
  • 8 POSTS
This actually turned out too be a faulty O2 post cat sensor this was the tell tale sign before the engine light came on in the dash stating the error code in emissions control module
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Monday, December 6th, 2010 AT 8:33 PM

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