2003 Jeep Cherokee Idle at start up 2003 GrandCherokee Lare

EDEPALMO

MEMBER
2003 JEEP CHEROKEE
6 CYL
4WD
AUTOMATIC
88,500 MILES

Sometimes at start up of Engine at least 50% of the time. The Engine Idle speed at start up is 2000 RPM or a little above.
If you turn the ignition off and restart it will be at the normal Idle of around 1500 RPM
I have changed the Idle positioning sensor twice, still have the same problem

6 Replies

JACOBANDNICKOLAS

MECHANIC
109,740 POSTS

Has the check engine light come on? Have you checked for vacuum leaks?

Let me know.

Joe

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Wednesday, February 10th, 2010 AT 1:03 AM

EDEPALMO

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Joe No the check engine light is NOT on. I've checked for Vacuum leaks, but found none yet

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Wednesday, February 10th, 2010 AT 7:35 AM

EDEPALMO

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[quote="Jacobandnickolas"]Has the check engine light come on? Have you checked for vacuum leaks?

Let me know.

Jo
No check engine light isn't coming on. I have checked for vacuum leaks. Have not found any.

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Wednesday, February 10th, 2010 AT 8:06 AM

JACOBANDNICKOLAS

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109,740 POSTS

I feel there is a problem with the throttle position sensor, but I can't be sure without a trouble code.

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Thursday, February 11th, 2010 AT 4:02 PM

EDEPALMO

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Joe; The Service Engine light is not on. Put tester on and can't get any codes at all. In my original post I said I replaced the Idle positioning sensor twice. I meant I replaced the Throttle positioning twice. It still does the same thing.