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What causes your car to idle high at times then.

Tiny
ANONYMOUS
  • MEMBER
  • 2002 SATURN SC2
  • 95,000 MILES
What causes your car to idle high at times then normal at other times? When driving and you let off the gas, the car remains at a high rpm, when you come to a stop, sometimes it's revved up high. You can shut the car off, restart it and it is normal. Is this caused by the idle air control valve?
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Thursday, April 4th, 2013 AT 10:55 PM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Try cleaning the throttle plate on both sides and idle control valve hole with choke cleaner sometimes the plate gets sticky from oil and causes this make sure to connect the duct work up after
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Thursday, April 4th, 2013 AT 11:17 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Just to add to this one try unhooking the negative battery cable for 30 seconds and see if that corrects it. Also have you checked the coolant temp sensor and connector?
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Friday, April 5th, 2013 AT 4:18 AM

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