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Originally Posted by Lil bastard
Sounds like two of the three pairs of diodes are gone. An independent alternator rebuilder can easily swap the diode pac on one of these, or do a total rebuild, usually for less than replacement.
This is made pretty easy with some of the testers out there. One I like is the Actron-CP7677-Automotive-TroubleShooter-Multimeter . In addition to all the functions of a normal DMM, it also includes a tach and can test for short cicuits, bulbs, fuses, relays,battery load, alternator load, MAF and TPS sensors and more - it includes a pretty comprehensive manual to perform all the functions. You can even use it around the house. It has 18" leads (incl. aligator clips), a 2" LCD screen that even tells you where to plug in the leads, independent ON/OFF, a Hold button, flip-out stand and shock holster - a lot of tool for the money.
Cheers! |
That's a pretty reasonable tester. I expected it to cost more.
BTW, I didn't mention it, but BatteriesPlus checked the diodes when they tested the alternator and they were good.