Thread: Bad alt diode?
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Join Date: Mar 2001
Location: Surry, Maine, USA
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Bad alt diode?

Hi all-

Just started having a charge problem on my 70T 2.2 carbed. External voltage regulator.

I think I left the key in the partially on position for an hour or two, and now my volt meters (1 analog 1 digital) are showing a random (not related to RPM's), momentary drop to less than 13 volts. The meters wander between 12.8 and 13.8, but just flicks down in the 12's for a second.

I've gone through a few VR's, but usually when they go I get very high voltage spikes. In this case it isn't going high, but low and wandering. I've gone through most all of my connections, grounds, etc, but still have the same problem.

Does anyone know what the symptoms of a bad alternator diode would be?

Thanks for any help.
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Steve B.

1971 T 2.2 w/Zeniths
Gruppe B member 171
Mid 9 Web Site Guy
Old 05-18-2007, 05:39 AM
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