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Old 02-02-2013, 10:30 AM   #1
Join Date: Jul 2012
Posts: 38
Question alt gauge pegged...

I only drive my TJ on the weekends and I had to jump start it yesterday but I thought it was due to the cold weather lately. I drove it about 20 miles and all seemed OK. The alternator gauge was showing 14 at idle and highway speeds. I shut it down and had to jump it again. I headed back home and as I pulled back into the drive way the check gauge light came on and the alternator gauge pegged all the way to the right. I shut it off and the gauge is still pegged with the key out and of course it wont start. Any ideas before I do the usual battery and alternator test. Thanks.

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Old 02-02-2013, 10:57 AM   #2
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Join Date: Sep 2012
Location: Ridgefield, WA
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Do the test and see what you come up with.

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Old 02-02-2013, 12:35 PM   #3
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Join Date: Oct 2009
Location: Phila
Posts: 2,278
It's a voltage guage, and my money is on the battery.

But first make sure your battery connections are good. No corrosion, bright and clean on the mating surfaces.
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Old 02-08-2013, 12:25 PM   #4
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Posts: 38
Was the battery. Thanks.
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