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Unread 05-15-2013, 08:49 PM   #1
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Join Date: May 2013
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99 jeep Cherokee sport.

I recently registered my dad's old jeep. It had been parked in the driveway all winter. I brought it to a garage because the check engine light was on. They ran the diagnostic and said there was a problem with the alternator and battery. They were both replaced about 3 years ago so my dad doesn't think it's a problem with those. So I'm wondering if any of you have had the same issue. When I drove it to the garage it stalled at a stop and didn't have very much power at all while driving. It has had some electrical issues as well. Another time, I was driving for about ten minutes and the check gauges light came on, the battery gauge or power gauge was all the way up. At 19. And it lost a little power. I pulled over and it went down, it did this every couple of minutes. Any help would be appreciated. Please and thank you.

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Unread 05-15-2013, 11:33 PM   #2
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1987 XJ Cherokee 
Join Date: Sep 2008
Location: 3rd rock from sun
Posts: 9,174
Welcome to JeepForum and the world of XJs!
You'll learn that XJs can be prone to crazy electrical symptoms, particularly in instances of poor grounding connections such as can occur with oxidation from sitting unused for extended periods of time.
The first thing I would do is clean the battery connections and any ground connections under the hood. This would include the one one the fender coming from the negative battery terminal as well as both ends of the engine block ground strap. A thin coating of electric or lithium grease after cleaning and before reconnecting will ensure a long lasting job.
Good luck with the XJ!

"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

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Unread 05-16-2013, 12:17 PM   #3
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2000 XJ Cherokee 
Join Date: Apr 2002
Location: out in the garage - Minneapolis, Minnesota
Posts: 23,736
The symptoms point to damaged/corroded battery wire/connectors, a failing battery, or a failing alternator. Just because a part was new a few years ago, doesn't mean it is still good.

Inspect/test the wires and connectors, and have the battery and alternator load tested.

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Unread 05-17-2013, 09:14 AM   #4
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Thank you for the help! I'll try it out and see what happens.
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