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When you start the car after it is warm, 50.

Tiny
MATTFULLER
  • MEMBER
  • 2007 MERCURY MOUNTAINEER
  • 72,000 MILES
When you start the car after it is warm, 50 percent of the time it has a rough idle. But when its cold the car is fine. When it does have a rough idle, once you put it in drive or start moving its fine, traffic lights and everything it idles fine.
Monday, November 19th, 2012 AT 7:44 PM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Check for vacuum leaks and check the IAC (idle air control valve)
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Monday, November 19th, 2012 AT 7:49 PM
Tiny
MATTFULLER
  • MEMBER
  • 2 POSTS
Is there a different type of IAC on this car, becasue I just replaced one on my truck, and know what that one looked like, but I can not find one on this car, I know that it will be on the throttle body, but did they start using something different or different looking?
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Monday, November 19th, 2012 AT 10:10 PM

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