battery not charging HELP!! - F150online Forums

battery not charging HELP!!

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Old 07-14-2004, 09:11 PM
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Join Date: Jul 2004
Location: colorado
Vehicle: 2000 Ford f150
Posts: 2
Question battery not charging HELP!!

Hello I've Got a problem

1. my battery light on the dash came on and the voltage gauge was jumping up and down with a/c, power windows and the loke. I went to AutoZone (parts store) and had them test it. result was a bad alternator.
they didn't have one instock so I went to Checker ( parts store) I had them test it and they siad bad Battery. they Had an alternator and Battery in stock but way to much.
I went Back to another Autozone and got both alternator and Battery. replaced them and everything looked fine.

2. one day later and the battery light is not coming on but the voltage gauge is doing the same thing. battery is not charging and my engine died on the hiway.

2000 ford f150 xtl
115,000 miles

what do you think it could be?

any help please
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Old 07-14-2004, 11:19 PM
Join Date: Apr 2004
Location: Boston, MA
Vehicle: 1986 Ford F150
Posts: 77
Wiring. Check the voltage at the alt. and then at the battery terminal. How did the wires look?
It could also be a defective alt.
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Old 07-15-2004, 01:20 AM
Join Date: Feb 2004
Vehicle: 1991 Ford F150
Posts: 60
With my F150, I had an alternator that died intermittantly. It turned out to be the rectifier in the Alternator, which I replaced with success. The battery would register as low if the alternator was bad. You may want to check the harness to the alternator, as a short would to the rectifier or the voltage reg in very quickly.
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Old 07-15-2004, 02:16 AM
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Join Date: Jun 2004
Location: Phoenix, Arizona
Vehicle: 1998 ford F150
Posts: 21
absolutely a wiring harness problem.
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