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Old 10-02-2019, 06:21 PM
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Join Date: Oct 2016
Location: LaGrande OR
Posts: 15
Charging issues

I have a 93 Wrangler with 4.0
It started having issues charging (which often went undetected thanks to a deep cycle battery) if it sat for a day or two the battery would be flat.
Last time it went out it was charging at 14 volts and than most of the gauges including the tach and speedo quit working and eventually had to be trailed home.
I'm not having much luck finding any info on diagnostics for this year, even which terminal is which on the alternator.

It has the Denso alternator controlled via the PCM, can't find a new PCM and don't want to throw 250$ parts at it hoping to fix the problem and I don't want the bypass kit.
The alternator and battery test out fine.

Anybody manage to cure this ailment?.

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