XJ Alternator Durability?

Aug 13, 2003 1 Replies

Anyone know how long an alternator on a 93 XJ usually? Mine has 148K miles on it, and there's no record that it was ever replaced. Would having it rebuilt or replaced be a good idea, or should I just wait until when/if it actually fails. I'm just a bit paranoid because the alternator on my previous vehicle, a Dodge Colt, needed replacing not once but twice.



Also I've noticed the voltage as read on the dashboard voltmeter occasionally drops to 12 volts, but I assume this is OK since it still runs fine and is above the red line on the meter.



Monte Castleman, Bloomington, MN to email, remove the "q" from my address



They run till they don't run no more. :]

I've seen alternators die after 4000 miles and others last over

200,000 miles. The material they use seems to last longer than the old carbon brush ones.

That's normal. Just the low end of the charging cycle. Only way to know for sure is to put a tester on the charging system.

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