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Alternater is good but still not charging why

Tiny
ANONYMOUS
  • MEMBER
  • 1991 FORD F-150
  • 150,000 MILES
Alternater is good but still not charging why
Friday, March 15th, 2013 AT 1:23 PM

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Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
If the battery is down, take it off and get it charged. Cant do any testing if battery is down. How do you know the alternator is good?

Maybe a problem with alternator wiring circuit, to or from the alternator?
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Friday, March 15th, 2013 AT 2:08 PM
Tiny
JDL
  • MECHANIC
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Just to add, do you have an internal or external voltage regulator?
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Friday, March 15th, 2013 AT 2:14 PM

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