my jeep stalls out randomly -
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Unread 08-23-2014, 02:19 PM   #1
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Join Date: Aug 2014
Location: martinsburg, west virginia
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my jeep stalls out randomly

I have a 99 4.0 and it will just randomly stall out driving down the highway or driving through town. It seems like it starts doing it after ive been driving it for a while that day and it gets warmed up, the engine will stay running but there is no power to it and when I hit the accelerator the engine actually dies down some. And byvthe time I get pulled over and stopped on the side of the road, the engine will cut off completely. Sometimes it will start right back up other times it wont stsrt for another 20 minutes. Its not throwing any codes and Its not the fuel pump or fuel filter

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Unread 08-23-2014, 03:15 PM   #2
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2003 WJ 
Join Date: Dec 2008
Location: State College, PA, PA
Posts: 2,150
Try to retrieve any stored codes. No CEL does not mean no codes all the time, key: on off on off on look at odometer.

This issue sounds similar to a CKPS failure.....crank position sensor.
QUOTE=billzcat1;wsar10 is right on point on this oil thread - as usual. Anyone reading this would be well-served taking his advice.

-03 WJ laredo 4.0 120k a few minor mods
-93 XJ 5spd, 3" zone lift
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Unread 08-23-2014, 03:21 PM   #3
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1999 WJ 
Join Date: Dec 2010
Location: manassas, va
Posts: 779
If it was me, the first thing I would do (unless you just did it) is pull the battery cable clamps off the battery posts, and clean both mating surfaces with a battery post/clamp wire brush. Don't assume that they are OK unless you have already done it. Don't get bitten by something free and easy to verify.

The WJ works in mysterious ways!
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