Charging problem

[marc_scirocco at sympatico.ca (marc_scirocco Québec)]

Hey Julie, if your battery dies while driving, it is because the alternator
is not charging it.

With a voltmeter, measure at the alternator output/good ground, at the
battery positive post/good ground, and make sure that you get 13.8V at
around 1500rpm

Problem might be: bad alternator, bad voltage regulator, bad contact on the
positive wiring, bad contact on the negative wiring, OR a combination of all
these problems. Too much resistance in the charging circuit.

Remember, if the alternator is putting out 40 amps, it does not take a lot
of ohms to drop the voltage below 12V at the battery. E=RI (0.1 ohm * 40A =
4V)

New 90A alternator, with new upgraded positive wiring and negative wiring
will renew your charging circuit.

Cheers.

Marc
'83 Scirocco
'88 Scirocco Slegato

-----Message d'origine-----
De : scirocco-l-bounces@scirocco.org
[mailto:scirocco-l-bounces@scirocco.org]De la part de
mr.utility@highstream.net
Envoy? : mercredi 15 octobre 2003 18:29
? : Jason
Cc : Julie Macfarlane; scirocco-l@scirocco.org
Objet : Re: Charging problem


No, do not do this at all...  Sorry to trump you on this, but do not do
this,
it will kill the ECU with the spark (ie spike) that trys to follow the
battery
lead as you pull it away...  A customer did this recently on his 93 Corrado,
and it killed the brain in the speedo-cluster...  An expensive mistake...  I
realize that the car in question may actually be carbed, but any car with
any
type of ECU at all will not respond well to this sort of test...

HTH

David


Quoting Jason <jason@scirocco.org>:

> At 09:06 AM 10/15/2003, Julie Macfarlane wrote:
> >My battery will not charge correctly. I drive a few miles and it
> >discharges an 800 CCA battery.
> >I found that the reverce lights were wired in backwards allowing the
> >lights to be on in forward.
> >Must have confused any one following me  :)
> >
> >Would this current drain do it?
>
> Stranger things have happened... but if you have a 55A alternator, those
> would need to be some big ass bulbs to sap that kind of power.
>
> My famous trick?  Start the car, unplug the battery.  If it dies, the
> alternator isn't charging.  I have been advised that doing this could
> potentially damage your charging system, but I've never seen it happen and
> no one has ever offered an explanation... That said, do it at your own
> risk, but a few seconds won't harm anything IMO.
> Jay
>
>
>
>
>
>
> >Julie Macfarlane
> >Menlo Park Research & Development
> >Internet Application Developer
> >www.menloparkrandd.com
> >www.montgomeryweb.org
> >Amsterdam NY
> >
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> >
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