Question about Jeep Grand Cherokee

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Jeep idles around 500 rpms before driven, after it is driven it idle again at 500 rpm's until it's put into park. in park it idles at about 1250 rpms

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  • nicholas2009 Jan 19, 2009

    my jeep is idlin really badly and misses sometimes and sounds like its goin to stall it has been put on the computer and says the tps has low voltage ???

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Check throttle position sensor

Posted on Oct 03, 2008

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After my 03 jeep liberty warms up to normal, the idle begins to fluctuate until it goes down to 500 rpms than wants to shut off but revs itself up to stay on, now when I am in park and rev the rpms up it...


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When in gear and a/c is turned on, wants to stall


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I had the exact same problem on my 04 GC. I put some Techron Concentrate Plus Fuel System Cleaner in from Wal-Mart and it seemed to fix the problems right away. Let me know.

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Sounds like it could be a bad map sensor.
Black smoke?

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