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Unread 10-14-2013, 08:24 PM   #1
Goose346
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2010 JK Wrangler 
 
Join Date: Dec 2006
Location: N.E. Oakland County, Michigan
Posts: 270
2000 TJ 4.0L Idling Issues

My engine has 130k miles and it is starting to idle fast on its own. It will reach normal operating temp and idle nice and smooth. Then, it will take off and rev high for 60 seconds or more.

A co-worker stated the engine controller may have cracked soldering that is causing poor idle.

Has anyone experienced any of this?

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Unread 10-15-2013, 04:29 AM   #2
uberxj92
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1992 XJ Cherokee 
 
Join Date: Oct 2012
Location: umatilla, florida
Posts: 1,962
Try taking it to autozone have them check for codes. Sounds like a bad sensor
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Unread 10-15-2013, 01:09 PM   #3
pstewart
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Join Date: Jul 2013
Posts: 13
I agree check the crankshaft sensor, just a thought.
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