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Fox T-Bird/Cougar Forums

Technical => Engine Tech => Topic started by: 87tbirdmanjwg on February 17, 2006, 10:48:22 PM

Title: '87 xr7 High idle problem
Post by: 87tbirdmanjwg on February 17, 2006, 10:48:22 PM
Tonight after work I crank my car to go home, It idles up as normal but does not idle down. At one point It reached close to 2000 rpm's wile I was leting it warm up. When in gear It was about 1200 rpm's and would not go bellow that. I popped the hood and the checked to throttle body to make sure it wasn't stuck and checked all the vaccum lines; everything seemed fine. Could it be the Map sensor? Any help would be great. ~Jonathan~
Title: '87 xr7 High idle problem
Post by: CougarSE on February 17, 2006, 11:24:44 PM
Sounds like your IAC stuck.  Just tap on it to see if it will free up.  If not pull it off and clean it out and have it tested.
Title: '87 xr7 High idle problem
Post by: 87tbirdmanjwg on February 17, 2006, 11:31:50 PM
I unplugged the IAC and it and the motor didn't idle down at all...
Title: '87 xr7 High idle problem
Post by: CougarSE on February 17, 2006, 11:36:56 PM
It won't if its stuck open.  Sounds like it is stuck open to me.
Title: '87 xr7 High idle problem
Post by: 87tbirdmanjwg on February 18, 2006, 12:22:32 AM
Quote from: CougarSE
It won't if its stuck open.  Sounds like it is stuck open to me.

I'll have to take it off tomorrow and spray some wd40 in it. I went back out and cranked the cougar up again and it's not doing it now. The negitive degree temps. outside might be affecting things...:hick:
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