odd idol only after running for a few seconds
03-29-2011, 03:10 AM
#1
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Model: Cherokee
odd idol only after running for a few seconds
hey everyone i have an 87 2 door inline 6 4.0 my problem is that after a couple minutes of driving the idol stays up around 2000 rpm and will even make it up to 3000 some times and i cant figure out whats wrong with it ive replaced the iac and cleaned the throttle body and lubricated all the throttle linkage and hooked a computer up to it and it didnt say anything was wrong so ive hit a wall if anyone has experienced this befor or if you know anything about it i would love the help thanks.
03-29-2011, 01:57 PM
#7
Seasoned Member
Ok. I had this problem last year, before I junked it. I kept turning the injectors and cleaned the components of the throttle body. Check the O-rings on the injectors. You have to clean everything on the throttle body. My IAC valve was gummed up from cheap gas. After you clean it, on a 1/4 of a tank dump chevron techron in. Run it for 10 minutes and try the next grade gas. That was how I fixed mine. Took me a month every spring trying to figure it out until last year.
Posted by: Dre
Posted by: Dre
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03-29-2011, 01:58 PM
#8
Seasoned Member
Check the breather tubes and spray cleaner in the MAP sensor. It might have a lil oil in it... Mine did.
Posted by: Dre
Posted by: Dre
03-29-2011, 02:11 PM
#11
Seasoned Member
Anything that dries fast and doesn't have a build up. Brake part cleaner cuts the oil.
Posted by: Dre
Posted by: Dre
03-29-2011, 05:18 PM
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Year: 2000
Model: Cherokee
Engine: 4.0
2x
1987 -1990 xj Automatic Transmission? If yes read this:
http://autorepair.about.com/library/faqs/bl232i.htm
1987 -1990 xj Automatic Transmission? If yes read this:
http://autorepair.about.com/library/faqs/bl232i.htm