Alternator/battery charging

SLEMOINE

MEMBER
2003 FORD F-150
V8
2WD
AUTOMATIC
111,000 MILES

What else would cause the truck not to charge? I replaced battery and 3 alternators and it will not keep a charge. Ive checked voltage while running and not running and it is just using power from battery

Tuesday, March 31st, 2009 AT 11:42 AM

4 Replies

BILLYMAC

MECHANIC
2,204 POSTS

There is a fuse #F1.11 that sounds like it is blown or one of the fusible links is shorted here is a guide top help you check for power and the alternator wiring diagrams so you can see what to test.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the diagrams (Below). Please run this test and get back to us.

Cheers

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Tuesday, March 31st, 2009 AT 4:00 PM

DARRYL NIGHTOWL

MEMBER
0 POST

Thanks for the guide it was the fuse on my truck I love this site.

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Monday, August 6th, 2018 AT 4:52 PM

DOM.MAN

MEMBER
3 POSTS

How long topically does it take for a battery thats 1 year old to die from the keys left in the ignition but engine not on?

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Sunday, October 13th, 2019 AT 6:11 AM

DANNY L

MECHANIC
5,648 POSTS

Hello, I'm Danny.

Where the keys in the "on" position having the dash lights on? Or keys just sitting in the ignition in the "off" position? Thanks for using 2CarPros.

Danny-

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Sunday, October 13th, 2019 AT 4:10 PM