Question about 1987 Jeep Grand eer

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1987 jeep grand wagoneer charging problem

I changed the altenator and the gauge shows that is still discharging and it is running the battery down. I turn the headkights on it discharges more.

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Not a solution or a clarification, but there's no spot for just passing thoughts.... See what type of alternator you have in there (some are different than others. Since Jeep is now part of Chrysler I would not be surprised if the regulator is in the main computer. I've seen dodge vans with this system and it drove my friends shop crazy for two weeks till they found this out!

Posted on Dec 14, 2008

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1998 jeep grand cherokee 5.9 v8 charges sometimes then will discharge


Sounds like the battery is dead & not capable of
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You already know the alternator should put out
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The only thing that changes is the current output
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You may be able to just buy the regulator &
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Have to OHM out the diodes when it is apart

You should also check diodes for leakage with
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The amp gauge on my 97 Jeep Grand Cherokee has been dropping to zero while I'm driving lately. When I shut off the motor and restart it the gauge starts showing that its charging again. I drove it for a...


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