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Juan Crespo
Juan Crespo, Tech Trainer
Category: Ford
Satisfied Customers: 1513
Experience:  A.S.E. Master Technician, Advanced Level, Emissions - Asian, Domestic, & European
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Why are batteries not charging with new alternator installed

Customer Question

why are batteries not charging with new alternator installed 1999 ford 7.3 diesel F350
Submitted: 9 months ago.
Category: Ford
Expert:  Juan Crespo replied 9 months ago.

Well, actually, the batteries don't do the charging, the alternator does. I can probably help you but first I'll need some information:

  • Were the batteries charged and load-tested before the new alternator was installed?
  • Was the charging system checked for volts and amps to determine what was causing the problem?
  • Are you thinking of repairing this issue yourself? If yes, do you have a volt and amp meter capable of reading up to 120 amps?