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2001 jeep cherokee idle problem


 
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ginkod
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Joined: 24 Jun 2007

PostPosted: Sun Jun 24, 2007 3:00 pm    Post subject: 2001 jeep cherokee idle problem Reply with quote

I'm having issues with the idling on my jeep. It idles at a low 500 rpm. It's quite annoing when everything vibrates way more than it should. I've red that it should idle at 650-700. I've done all the basic things like, replacing the spark pluggs, clean the idle air control motor, decarbonized the throttle body and still no improvement.

I've had some electrical issues where the pcm stored the following codes:
P1698-NO BUS MESSAGE FROM TRANS CONTROL MODULE
P1698-NO BUS MESSAGE FROM TCM.

I would like to know if this might all be related. Thanks
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Jeepfanatic
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Joined: 26 Jul 2008
Location: Long Island

PostPosted: Fri Sep 05, 2008 11:39 pm    Post subject: Reply with quote

well even if the idle is really low it should still be fairly smooth. Other problems could be a leaky fuel injector, poor fuel pressure, lost compression in a cylinder a burnt valve, low voltage from the coil. The list goes on. Its the vibrating that would bother me ot the low idle as much. Is there a reset for the idle control valve i know on some cars there is aprocedure to reset them if the pcm does Not do that for you. Hope this helps

Mike
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