.....in a week. I'll put a new (rebuilt) one in, and drive it for a couple of hours and the "GEN" light comes back on. This same thing has happened 3 times. So, obviously it is not my alternators having the problem....what's going on?
Did you have the auto parts store test the Alt before you did the replacement to be sure they were bad. Also... Are they the factory style or the newer internaly regulated alts.
Battery is fine......I'm suspecting the voltage regulator. I think I'll change it out and see what happens. I did have one of the (new) bad ones tested, and it tested at 4 volts!
alternators failing Rare as it is, sometimes the wiring from the alternator has a very high resistance connection in the wiring somewhere. This connection maybe corroded, partially melted, or otherwise not correct. This type of high resistance connection causes the alternator to "overcharge" and subsequently fail. I've seen it once or twice. If the voltage regulator checks out O.K. check out the wiring from the alternator, making sure all connections are clean and tight. Another good indication is after you first start your car, put your hand on the alternator and see how hot it gets. If it gets very hot quickly, it's working overtime. Hope this helps. Len
Looks liek it was the voltage regulator. Changed it out and everything seems to be working fine. thanks for the help boys.
