1988 Chevy Suburban

Tiny
CKKOCH
  • MEMBER
  • 1988 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 157,345 MILES
After pulling in the driveway I noticed the engine ideling fast. I put the truck in gear to move it and it shifted hard. Any ideas on the fast idle because what ever this is happened on the way home?
Friday, March 6th, 2009 AT 10:04 PM

1 Reply

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Check for vacuum leaks first. Hoses popped off, stuff like that. Could be a stuck Idle Speed Control Motor. Located on thepass side of theTBI unit, has a square 4 wire connector. Those also sucked theTBI base gaskets near the ISC motor, so check for that too
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Saturday, March 7th, 2009 AT 8:14 AM

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