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Engine Revving problem

Tiny
BUTTHAIRS
  • MEMBER
  • 2000 CHEVROLET IMPALA
  • 6 CYL
  • 2WD
  • AUTOMATIC
Sometimes when I turn my car on the engine is revving uncommonly high. I then turn the engine off, turn it back on again and it will be revving normal. Is this likely a symptom of a bad Throttle Position Sensor? Or is this a sign I need to clean my Throttle Body? Or is this something completely different? There is no Check Engine light on. Thanks in advance!
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Monday, March 28th, 2011 AT 1:32 PM

1 Reply

Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
Best thing to do is first clean the throttle body out with cleaner to see if there is any carbon build up. Have the car scanned. Most likely it is the idle positon sensor is bad. I have tried to clean one but found it is better to to replace it.
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Tuesday, May 24th, 2011 AT 4:00 PM

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