voltage across battery when charging ?

[~The Jester~]

Originally Posted by Mustang_289

Only load tests we've done is turning on lights, electric fan, all other accessories to drive load. What exactly is a load tester - how is it used?

We will be trying another alt this week.

A load tester hooks directly to the battery, and supplies a "load" to it, and you can watch how fast the battery voltage drops right on the tester. Gas stations/Autozone pretty much all those type places uses them.

I think you're wasting your time changing the Alt. You've already proven that it works, ie bench test, and it works on the car with the battery disconnected.

Would this per chance be a CHROME alternator? A buddy of mine had his brackets powder coated, and the alt no longer grounded itself through the case. Cleaned off a little powdercoat, and all was well. A friend of my Dad's had the same thing happen with a chrome alt.

Just throwin shyt out there to check man. Like I said, this is gonna be something silly when we finally figure it out.

[82 GT]

Originally Posted by ~The Jester~

I think you're wasting your time changing the Alt. You've already proven that it works, ie bench test, and it works on the car with the battery disconnected.

No he hasn't really. He's only proven that the other alternator works correct.
Yeah, he did take HIS alternator to be checked and it checked out ok but I question the type of tester the place used. I say, at this point, his alternator has a bad diode and the bench test that was used couldn't check it under load or check to see if the diodes were good........or both
If the other alternator worked and got the correct voltage readings, why doesn't his PA alternator do the same?

[~The Jester~]

OK, I musta misread that then. I thought the PA read the correct voltage on the bench, and when he D/C the battery (WHICH may have killed the diodes right then.)