Rough idle issue -
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Unread 03-20-2008, 09:51 PM   #1
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Join Date: Mar 2008
Location: Toronto
Posts: 16
Rough idle issue

Just got my jeep back from the shop after windshield fluid pump needed replacing, the jeep is 2 weeks old and they had it 2 days to fix the pump and now... When I'm at a stop and take my foot off the break (my Jeep is automatic) and before I step on the gas the car slowly moves forward, the problem is I feel this vibration, It feels like the idle is slightly to slow/low so the car labors/vibrates a little. (Sort of like on a hot day when you turn on the air conditioner sometimes the idle will drop for a few seconds but this is continuous until I step on the gas) I don’t want to go back to the dealer again, is there an easy way for me to fix this,,, maybe manually adjust the resting idle speed? Any help would be great.

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Unread 03-21-2008, 05:42 AM   #2
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2000 XJ Cherokee 
Join Date: Aug 2007
Location: Northeast USA
Posts: 644
I dont think you can manually adjust the idle speed. these things are all computer controlled.

is it more of a "buzzing" noise? we get that occasionally on our patriot but never from idle or stoipped, its happens sometimes when accelerating from a slow speed like the tranny not sure what ratio to use. I asked the dealer to check it out when we had the oil changed and they said it was "a normal function of the CVT." I wonder if he couldnt get it to do it though as it doesnt happen a lot and he only had it for like a 10 minute test drive.

happens a couple times a week and its not that noticable so we just ignore it. it "buzzes" for maybe a second when it does happen.
[COLOR="DarkRed"]2000 Cherokee Sport 4.0L Selec Trac[/COLOR] - mine - for occasional wheeling
[COLOR="DarkGreen"]2007 Patriot 2.4L FD I 4x4[/COLOR] - wifes - doomed to rarely leave the street
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Unread 03-21-2008, 05:54 AM   #3
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2007 MK Compass 
Join Date: Aug 2006
Location: Madison/Janesville, Wisconsin
Posts: 5,624
CharBroiled is right, no manual adjustment, it's controlled by the PCM the same as the Cruise Control

What is your date of manufacture? Is it before April '07? If so them maybe the TSB will apply.

Sorry to say it's probably going to mean a trip back to the dealer.

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