I am not sure if it is a 10si or a 12si it has a serpentine belt. The
battery is good it holds a charge. The car does not run when the battery
cable is pulled off. The car dies. Is it ok to run the old voltage regulator
with the alt that has the built in regulator. When I turn the key on with
out the car running should I have 12 voltage at the alt and what wire
should it be. I believe that on the alt, on the back where the wires plug in
there is the letter "F" on one side and not sure the letter on the other
side of the plug in. I am going to take the alt off and have it checked. But
back again to the switched hot wire to the alt? If there is not a hot to the
alt do I go back to the external voltage regulator.
Thanks
AL
----- Original Message -----
From: "Bow Tie" <[EMAIL PROTECTED]>
To: "The Chevelle Mailing List" <Chevelle-list@chevelles.net>
Sent: Wednesday, September 14, 2005 11:41 AM
Subject: Re: [Chevelle-list] alternator stopped charging new with old
What do you mean by "new style alternator"? Is it a
10SI or 12 SI? If it is, it has an internal regulator.
If it's a DN "old style" you have an external
regulator. You will only have as many volts at the
alt. as you have in the battery with the car not
running. You can check the alt. With a volt meter on
DC you can check at the battery or on the bus bar of
your horn relay(10 ga. red wire) while the engine is
running at about 2400 rpm. You should show about 14.5
volts. If not, take your alt. to a store that can
check it. This test is not always accurate. You may
have a bad alt. and the thing will test good. The
charging wire going to the regulator will be a 20 ga.
red. It should be the 2nd wire from the pass. side.
You may have a weak battery also that won't hold a
charge.
--- Al Hembd <[EMAIL PROTECTED]> wrote:
I have a question I have a 70 Chevelle SS and when I
got it a new style alternator and the original
voltage regulator is on it. and it stopped charging.
This is my question. When I turn on the key should I
have 12 volts to the alt, and from what lead coming
out of the old regulator should it be. If I don't
should I replace the old regulator or should I
bypass it. If I do? how do I do it and still keep
the idiot light working normal. I need to fix this
because I will be going on a car cruse on OCT. 10.
Thanks
AL
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