blowing alternator fuses

PONTIAC GRAND PRIX
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AERICKSON
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  • 1 POST
I have a 1994 grand prix with 145000 miles ,v6 That keeps blowing alternator fuses. I have taken the alternator and had it bench checked and it is ok.
i have checked the wires to the fuse block could find no problems . Don't want to have to take the alt back out but I am out of ideas . Please help if you can.
Sep 30, 2007 at 3:44 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Its probably overcharging the system-regulator not controlling the field circuit or computer is not telling the regulator to increase the field winding to drop the voltage.

Test the regulator ground connection.
Oct 2, 2007 at 10:12 AM
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