throttle and idol problems! -
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post #1 of 3 Old 10-18-2013, 04:31 PM Thread Starter
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Join Date: Oct 2013
Location: slatington
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throttle and idol problems!

I was driving my jeep today and was stopped at a red light. When all of a sudden my jeep decided to throttle itself. It only did it for a couple seconds and no check engine or codes came up. It also will idol rough sometimes, it will idol at a 900 and then drop down to 300 and the car will shake and then it will shoot back up. Was wondering if anyone else has had these problems or if anyone knows where to even start to try and fix the problem.

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post #2 of 3 Old 10-18-2013, 04:41 PM
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1992 XJ Cherokee 
Join Date: Oct 2012
Location: umatilla
Posts: 1,961
Welcome to the forums.
Sounds like the throttle position sensor. Or a vacuum leak.
What year make model engine auto or stick? How many miles?
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post #3 of 3 Old 10-18-2013, 04:59 PM Thread Starter
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its a 08 jeep grand Cherokee, automatic 3.7 with 49,000
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