I thought my Alternator was fixed!!!

[johnny]

If Ken';s tests show the problem is still there, get a coulpe of these:

https://www.ebay.com/itm/18AWG-Pair-of-Dual-Red-Black-Test-Leads-Alligator-Clips-Jumper-Testing-Cables/401714108415?hash=item5d8806d7ff:g:02kAAOSw6aVccNIF

Using them, bypass the # 1 and 2 plug with them completely. Report back. I'd lend you a set but the kids at the station sniped all of mine to use as
roach clips.

--johnny
--
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell

 

[emerystora]

Any set of jumper wires would work. However to do it right the one used for the exciter line should have a 10 ohm resistor in series with it.

Emery Stora

>
> If Ken';s tests show the problem is still there, get a coulpe of these:
>
> https://www.ebay.com/itm/18AWG-Pair-of-Dual-Red-Black-Test-Leads-Alligator-Clips-Jumper-Testing-Cables/401714108415?hash=item5d8806d7ff:g:02kAAOSw6aVccNIF
>
> Using them, bypass the # 1 and 2 plug with them completely. Report back. I'd lend you a set but the kids at the station sniped all of mine to use as
> roach clips.
>
> --johnny
> --
> Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
> Braselton, Ga.
> I forgive them all, save those who hurt the dogs. They must answer to me in hell
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

 

[Bruce Hart]

Ken B.

Here are the readings after removing the APC

With engine running
11.9 Batt. voltage at engine terminal
11.9 #2 terminal
3.5 #1 terminal
1.1 at center post of isolator

With engine running
Changed batteries here it get interesting
12.6 Batt voltage at engine isolator
12.1 #2 terminal
3.5 #1 terminal
1.1 center post of isolator
Rechecked battery voltage on engine terminal on isolator and got 12.1 volts

With engine not running rechecked engine battery voltage on isolator and
got 12.5volts. Started engine again remeasured at engine terminal
ang a voltage drop to 12.2volts.

Recheck voltage again after engine stopped and measured 12.5 volts

Am I going crazy or what???

On Mon, Sep 30, 2019 at 9:48 AM Emery Stora via Gmclist <

> Any set of jumper wires would work. However to do it right the one used
> for the exciter line should have a 10 ohm resistor in series with it.
>
> Emery Stora
>
> > On Sep 30, 2019, at 9:39 AM, Johnny Bridges via Gmclist <

> >
> > If Ken';s tests show the problem is still there, get a coulpe of these:
> >
> >
> https://www.ebay.com/itm/18AWG-Pair-of-Dual-Red-Black-Test-Leads-Alligator-Clips-Jumper-Testing-Cables/401714108415?hash=item5d8806d7ff:g:02kAAOSw6aVccNIF
> >
> > Using them, bypass the # 1 and 2 plug with them completely. Report
> back. I'd lend you a set but the kids at the station sniped all of mine to
> use as
> > roach clips.
> >
> > --johnny
> > --
> > Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
> > Braselton, Ga.
> > I forgive them all, save those who hurt the dogs. They must answer to
> me in hell
> >
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class

 

[bill wevers]

It sounds to me like the big wire from the "BAT" output to the centerpost
of the isolate is open circuit. You measured 1.1 volts on the centerpost with
engine running. Probably a bad terminal connection at the alt "BAT" terminal or
a bad connection at the center terminal of the isolator.
--
Bill Wevers GMC49ers, GMC Western States
1975 Glenbrook - Manny Powerdrive, OneTon
455 F Block, G heads
San Jose

 

[john r. lebetski]

Try metering the main wire from Bat output terminal on alternator to center isolator post. You should have close to 0 Ohms. Alternative test is
engine running meter back of alternator main out Bat terminal to ground on 20VDC scale looking for around 15VDC.
--
John Lebetski
Woodstock, IL
77 Eleganza II