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Why is it idling all over the place and the RPMs shooting up and down when it gets hot/

Tiny
ZACH.EMBRY
  • MEMBER
  • 2000 DODGE INTREPID
  • 160,000 MILES
When I drive it slows down then speeds up, if I come to a stop it dies.
Wednesday, November 2nd, 2011 AT 6:40 PM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
First eliminate all vacuum or air leaks in the system. You may have a bad IAC ( idle air control) but try cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC.
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Wednesday, November 2nd, 2011 AT 7:08 PM
Tiny
ZACH.EMBRY
  • MEMBER
  • 4 POSTS
What else could be a problem
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Wednesday, November 2nd, 2011 AT 8:10 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
You haven't done what I suggested yet.
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Wednesday, November 2nd, 2011 AT 8:14 PM

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