1989 4.0 idle too high
08-07-2011, 03:21 PM
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Model: Cherokee
1989 4.0 idle too high
Got a 1989 260000 miles GREAT JEEP still plows snow but it runs too fast at idle. Not all the time but most of the time?????????????????????
08-07-2011, 04:55 PM
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Year: 1990
Model: Cherokee
Engine: l6 242
Ive had this problem, everyone is gonna say that you need to check your sensors.
i would start by cleaning out the throttle positioning sensor and the crankcase positioning sensor. maybe even clean out your intake hose and Tb itself. and go from there?
i would start by cleaning out the throttle positioning sensor and the crankcase positioning sensor. maybe even clean out your intake hose and Tb itself. and go from there?
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