Alt,/ Battery
Lead Driver
Joined: Sep 2006
Posts: 7,907
Likes: 143
Alternator has a bad diode stack and the regulator may be bad at the same time.
Fix it right or it will just hound you.
Test for drain. If you see it, unhook the alternator charge lead. If it goes away, it's alternator time.
Fix it right or it will just hound you.
Test for drain. If you see it, unhook the alternator charge lead. If it goes away, it's alternator time.
Thread Starter
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Senior User
Joined: Jan 2004
Posts: 331
Likes: 0
From: Garnett,Kansas
Took the positive off and the truck died. Took it off and went to local alternator repair shop and tested it. There is a couple of diodes that were bad so having it rebuilt. It was only putting out 10.3
Moderator
Joined: Jan 2001
Posts: 57,017
Likes: 2,751
From: Virginia
Just trying to get the message out. Taking the battery cable off with the engine running can be a bad idea. The battery holds the voltage down if the alternator is in a failure mode were it is running out of control.
