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Engine increasing idle?

Tiny
EDUCATOR
  • MEMBER
  • 1993 CHEVROLET CAPRICE
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 117,600 MILES
Recently, my car's idle speed has been increasing and is all over the place. Usually when I start it, it hovered around 750-1000 RPMS. Lately while driving and taking my foot off the gas, the car sometimes goes up to 2000 RPM. I have punched the gas and usually it either has no affect or the idle increases more. Once while I was parked, the idle increased and I took it out of gear and it raced to over 3000 RPM's. Prior to this it has been running like a top. Any help would be greatly appreciated. Thanks and enjoy your day.
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Tuesday, February 24th, 2015 AT 3:54 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Check idle air control motor, clean throttle body and check for vacuum leaks. Here is a guide to help with the IAC location which I think is the problem.

https://www.2carpros.com/articles/engine-idles-too-high

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Tuesday, February 24th, 2015 AT 4:51 PM

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