High idle on 96 4.0 xj?
12-30-2013, 03:58 PM
#1
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Location: Central Iowa
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Year: 1996
Model: Cherokee
Engine: 4.0L High Output
High idle on 96 4.0 xj?
After my xj runs for a while like an hour drive on the hwy if i put it in park it will idle higher than normal. After i turn it off then turn it back on the idle is normal. What could cause this.
12-31-2013, 05:40 AM
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Year: 1996
Model: Cherokee
Engine: 4.0L High Output
I know its not either of those. I have had them all loose to install new exhaust manifold. Ive owned it for a few years and it has idled like this since the day i got it.
01-13-2014, 10:38 PM
#5
CF Veteran
Clean your IAC, throttle body (and valve!) and check your TPS. These three are involved in your idle rpm's.
If not fixed: check for intake leaks 9but it appears yours is doing is when warm, not all the time?)
If not fixed: check for intake leaks 9but it appears yours is doing is when warm, not all the time?)
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