Re: RE: Alternator issue?

From: Dustin Williams (dustinewilliams@gmail.com)
Date: Wed Sep 26 2007 - 23:20:23 EDT


I hear Autozone will test them.

On 9/26/07, Bernd D. Ratsch <bernd@dodgetrucks.org> wrote:
>
> With the engine running...what is the actual voltage at the battery? Check
> your power and ground circuits on the back of the alternator...if you have
> 12v and low resistance on the ground side...bad alternator. If you don't
> have a 12v reference on the back of the alternator - bad PCM (voltage
> regulator is built into the PCM). You can also try just disconnecting the
> NEG terminal on the battery while running - alternator should keep the
> vehicle running...if it doesn't, bad alternator or refer to the supply line
> checks.
>
> - Bernd
>
> -----Original Message-----
> From: Phillip Batson [mailto:pbatson68@yahoo.com]
> Sent: Wednesday, September 26, 2007 11:51 AM
> To: dakota-truck@dakota-truck.net
> Subject: DML: Alternator issue?
>
>
>
> How would I go about testing the alternator? I'm not sure if it is the
> battery, or if the alternator isn't charging the battery. I originally
> thought it was the battery, but now i'm not so sure. The volt meter in the
> truck goes up pretty slow after startup. I was using a Optima red top
> battery, and I know it isn't more than a couple years old. I'm searching for
> my receipt cause I know I got a pro-rated 84 months on that thing. I threw a
> yellow top I had laying around in it in the mean time. Seemed to work great
> at first, now the battery gauge is doing the slow crawl up to 14v again. I
> have a multimeter so I can test stuff, even have the kind that goes around a
> wire to tell me voltage/amps.
>
> Thanks guys!!
>
> Phil
>
>
>
>



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