Hey guys. Today when I was driving my car died on me. It died when I was doing some high RPM'S. When I turned the key ahead to try and restart it none of the dash lights even came on. So I checked fuses and the underhood battery fuse(70 amp) was blown. So I got it trailered home and figured I would just put in a new fuse. Well I put a new fuse in and the fuse blows. Put a second in and that one blows too. So I talk to my buddy and he said disconnect the big wire that attaches to the alternator and then put a new fuse in. Well I did that and it didn't blow when I reattached the battery cable. Then I reattach that big wire on the alternator and the fuse blows. According to my buddy it is a bad alternator. What do you guys think?

 

take it to the auto store and ask them to test it - usually free. Sounds like you're on the right track..

 

Thanks. Yea I'm going to take it off 2maro and take it in and have them test it. It's just odd that it would cause the battery fuse to blow one after another.

 

Seems unusual, but suppose a diode went bad or a winding shorted. Perhaps the brushes popped loose inside and shorted the armature (something like that).

 

also check for grounding out.

 

Thanks man. I found the problem. I replaced the alternator and it runs good now.