2000 4.0 idle problem
10-02-2014, 09:11 PM
#1
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Year: 1996 tudor,00 fodo, stock,stock
Model: Cherokee
Engine: 4.0
2000 4.0 idle problem
Idles
above a 1k rpm sometimes, doesnt do it on cold start up.
Looking for ideas for what to check first
above a 1k rpm sometimes, doesnt do it on cold start up.
Looking for ideas for what to check first
10-03-2014, 07:58 AM
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Year: 2000
Model: Cherokee
Engine: 4.0
Look closely for vacuum hose and/or intake leaks. After the leaks are completely ruled out, look into the IAC to make sure the spindle moves freely. The reason you don't have the symptom at cold start is because there's extra fuel and air getting fed into the intake masking the leak.
02-23-2016, 12:28 PM
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Year: 1996 tudor,00 fodo, stock,stock
Model: Cherokee
Engine: 4.0
high idle
manifold gaskets were shot. replaced them and all is well. didn't help my gas mileage much.
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