Charging Woes -
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Unread 08-30-2014, 11:00 AM   #1
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Join Date: Aug 2008
Location: ma
Posts: 1
Charging Woes

Last week my original alternator went, or so I thought. The battery gauge started reading 19+ and it eventually killed the battery.
So I replaced the alternator and battery. Still having charging issues.
When I left work, the battery gauge was dead. As I got closer to home, everything started to dim so I pulled over. The idle dipped very low as if it was about to stall then came back up to normal idle and the gauge read 14V and I confirmed this with a multimeter.
This morning I started it up and the alternator wasn't putting any voltage out, the multimeter only read 12.2V at the alternator post. I pulled the alternator and had it tested. Tested fine.

What to check next? 97 4.0L TJ

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Unread 08-30-2014, 07:19 PM   #2
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Knuckelhead's Avatar
2000 TJ Wrangler 
Join Date: Aug 2005
Location: Colorado
Posts: 15,131
Check and see if the fusible link is corroded or loose?...

Edit: Or signs of it having been hot...
TSB Information:
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Unread 08-30-2014, 08:17 PM   #3
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2002 TJ Wrangler 
Join Date: Nov 2013
Location: Crystal Lake, IL
Posts: 1,029
Do as Knucklehead suggests, but just a heads up for you, the voltage regulator is part of the PCM - Powertrain Control Module.
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