1991 Chevy Beretta Alternator fuse blows

1991 CHEVROLET BERETTA
290,000 MILES • 6 CYL • FWD • MANUAL
Avatar
KEVINJR007
  • MEMBER
  • 1 POST
My alternator fuse keeps on blowing as soon as I turn the key. I replaced the Alternator. As soon as I turn the key, not to the "Start" but the Accessory position. I'm thinking it could be the starter??? I've even used double the amperage ( 10 amp) fuse and it pops right away. Please help.
Jun 16, 2009 at 1:07 PM
Advertisement
Avatar
JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
Hello, with the alternator connector unplugged, does the fuse circuit still go to ground? You can use a testlight across the fuse terminals instead of the fuse.

You can run a B+ jumper from the battery post to the testlight, touch the testlight to the fuse terminal that goes to the alternator, with the connector unplugged, if the light comes on, I think the wiring circuit is shorted to ground, somewhere.
Jun 16, 2009 at 1:45 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.