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Unread 10-30-2013, 11:18 AM   #1
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Join Date: Oct 2013
Location: Stuarts Draft, Virginia
Posts: 1
Help with my Cherokee

Ok so here it is. I have a 2002 Grand Cherokee Laredo, 4.0L I6. It was giving me a small problem when I would be driving down just the road the engine would shut off. I would put it park turn the key off then it would start right back up. I googled it and checked my codes and the Crank sensor was suggested to be replaced. done. I test drove it down the road and it did fine at first and then it started flashing the check engine light and sputtered until the engine shut off. Put in park, turned key off, it started right back up. The jeep threw new codes of a misfire and ignition coil. Changed the spark plugs and coil pack and Jeep then still was missing and wouldn't idle very well. I also put mid-grade gas and a can of SeaFoam in and let it run for a good 10 minutes. Next I changed the cam sensor (I got a new code for that one) and it ran just fine until coming home I went across the railroad tracks and guess what engine shuts off. My ignition switch broke August 2012 and I never replaced it because after about 2 weeks it started working again fine. (and by broke I mean I couldn't turn the key without slapping it with my hand hard.) I purchased the ignition starter switch (the electrical component of the ignition switch) and plan on replacing that today because to me it seems like the jeep is just shorting out somewhere and that is where I plan to start. Any ideas/suggestions would be GREATLY appreciated.

Thank you in advance!

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Unread 10-30-2013, 03:10 PM   #2
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CCKen's Avatar
1999 XJ Cherokee 
Join Date: Jul 2011
Location: Canton, MI
Posts: 1,966
You'll have better luck posting this in one of the GC subforums.

This is an XJ forum. We only deal in antiques.
If we have data, letís look at data. If all we have are opinions, letís go with mine.

Man who stands in front of Jeep gets tired. Man who stands behind Jeep gets exhausted.
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Unread 10-30-2013, 03:40 PM   #3
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1987 XJ Cherokee 
Join Date: Sep 2008
Location: Indianapolis
Posts: 6,043
Welcome to Jeepforum.
I moved this thread to the Grand Cherokee section of the forum where your fellow WJ drivers can best assist. Good luck with her!

"You can set my jeep on fire and roll it down a hill,
But I still wouldn't trade it for a Coupe DeVille."
COTY 2009
Originally Posted by cruiser54 View Post
Better to hoard Jeep technical info than old newspapers and the neighbor's mail, I guess.......
ENTER your jeep in the September Cherokee Of The Month contest here!!
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Unread 10-30-2013, 03:49 PM   #4
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1999 WJ 
Join Date: Oct 2013
Location: Round Rock, Texas
Posts: 45
Well, I'd replace the mechanical parts of the ignition switch as well. Having to smack it to get it to turn sounds like there might be some loose bits and pieces floating around in there.

That it shut off going over railroad tracks suggests a loose wiring connection or damaged insulation on a wire somewhere. Time to start wiggling wires to see if you can get it to act up again.
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