Aggressive high idling

Asked by Gomazadams Sep 06, 2018 at 08:53 PM about the 2000 Jeep Cherokee Classic 4-Door 4WD

Question type: Maintenance & Repair

Have a 2000 grand Cherokee , have change
basically everything from head gasket,  intake
gasket , to sensors that needed to be changed an
still have an aggressive high idle an dont know
where to look next
Change the throttle on it , an hoses.. so what can it
be or if I am over looking something

3 Answers

F_O_R answered 6 years ago

Check for vacuum leaks and see if the throttle body butterfly is closed all the way at idle.

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F_O_R answered 6 years ago

What engine do you have? I am sure it has some type of idle control valve. Make sure it is working correctly. Tap on it and see if the idle corrects itself.

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Gomazadams answered 6 years ago

Engine is 4.0 ,, we have check everything .. We even tap on it an it won't correct itself.. When you start it , it is such very aggressive high idle... running out of ideas

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