8V92 alternator questions

[Leroy Eckert]

Don:
I probably will not be much help because I chased that switch ghost for a year.
I finally gave up and unplugged the fault light. It doesn't concern me any more.
My number 1 alternator is the one on top of the engine accessable under the bed.

After I start typically my amp guage will be in the 150 range with the switch in
dual. It progressively decreases while driving and the volt meter is around
13.5v. Once stable the amp reading is 50 amp at all times.

I periodically check my alternators for output with a meter.

If you find the ghost, please advise.

Leroy Eckert
1990 WB-40"Smoke N Mirrors"
Niceville, FL






----- Original Message -----
From: Don Bradner
To: wanderlodgeforum@yahoogroups.com
Sent: Tuesday, February 20, 2007 5:57 PM
Subject: [WanderlodgeForum] 8V92 alternator questions


I've got a few questions after I describe what I'm seeing on my
dual-alternator 8V92:

After starting, the voltage is somewhat below 13, and alt2 is running about 50
amps. Alt1 is essentially zero, although there is a slight upward blip when
changing the display from alt2 to both.

Voltage slowly rises, and after quite a distance (100 miles or more) the
voltage is in the 13.5 range. At around that time, the Fault light comes on.
Alt2 at this point is running around 25 amps, and there is no apparent increase
in the both position.

What do other 8V92 dual-alternator owners see for charge rates, 1, 2, and
both? I'm presuming the zero/near zero is telling me I have a bad alternator,
but is the 50 amps from Alt2 also low? If it is, what does that mean?

Does anyone know, on theirs, which alternator is 1 and which is 2? Front top,
or back by the bumper?

Don Bradner
90 PT40 "Blue Thunder"





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