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wierd rpms need help

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Old Nov 11, 2011 | 06:02 PM
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greengoblin's Avatar
greengoblin
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From: zeeland mi
Year: 1997
Model: Cherokee
Engine: 4.0
Default wierd rpms need help
ok i have a 97 xj country 4.0

when driving all is fine till i let off the gas. then the rpms will drop down to idol then go back up to 1000rpms and stay there. when i stop then they will drop down to 750 which is idol. i am at a los i have looked everything over even tried new tps and iac. PLEASE HELP!
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Old Nov 11, 2011 | 06:10 PM
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ol'DixieJeep
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From: Warrenton MO
Year: 2000
Model: Cherokee
Engine: 4.7L I6
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Map sensor...
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Old Nov 11, 2011 | 06:17 PM
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From: zeeland mi
Year: 1997
Model: Cherokee
Engine: 4.0
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it that just a sign of the map sensor going bad or does that mean it is bad.
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Old Nov 11, 2011 | 06:19 PM
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From: Warrenton MO
Year: 2000
Model: Cherokee
Engine: 4.7L I6
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i unplugged mine and plugged it back in while it was running and that fixed mine... may be bad. may be poorley connected. try that though.
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Old Nov 11, 2011 | 06:23 PM
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greengoblin
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From: zeeland mi
Year: 1997
Model: Cherokee
Engine: 4.0
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ok ill try it in the morning thank you
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