[Shotimes] Battery/Alternator/Voltage question

[Steve Tatro]

When you say "under load" you mean you had the engine running while in
park (neutral) at 1500rpm or you monitored that voltage while driving
around at 1500rpm?

The 13.5V I measured was while the car was idling (900rpm).

Are you suggesting that if I can't measure in the 14.5V range under load
then my alternator may be going?  Not that it would surprise me given
its age.

Thanks.

Steve

-----Original Message-----
From: shotimes-admin@autox.team.net
[mailto:shotimes-admin@autox.team.net] On Behalf Of Paul Nimz
Sent: Monday, December 23, 2002 1:24 PM
To: stevetatro@att.net; SHOtimes
Subject: Re: [Shotimes] Battery/Alternator/Voltage question


My recent experience was a14V and less under a load and at +1500 rpm.  I
was concerned and was told this is ok but one week later the alternator
failed.

With the new alternator, I get 14.3V to 14.5V with a full load and at
+1500 rpm.

12.6V is good for an open circuit battery.  The higher the voltage the
stronger the acid.

Paul Nimz
'97 TR SHO
'93 EG mtx SHO


----- Original Message -----
From: "Steve Tatro" <stevetatro_shotimes@att.net>
To: "SHOtimes" <shotimes@autox.team.net>
Sent: Monday, December 23, 2002 12:02 PM
Subject: [Shotimes] Battery/Alternator/Voltage question


> What's up.
>
> Got a stupid question, actually more than one.  What kind of VDC 
> should I get from my battery, with the car off?  I measured it after 
> driving around and it was 12.6V.  Also, what should the voltage be 
> with the car running?  I measured 13.5V.  Also, again, what voltage 
> should I expect when I go out to my car today after it's sat out in 
> the cold for 10 hours?
>
> What I'm trying to figure out here is if there's a simple way to 
> diagnose if the battery is good or going bad, and the same regarding 
> the alternator.  I'm assuming if it sits all day the voltage will 
> drop, and if it drops too much then my battery may not be holding a 
> charge properly.  Also, if the voltage measured is too low with the 
> car running, do I possibly need an alternator rebuild?
>
> Anyone?
>
> Thanks as usual.
>
> Steve Tatro
> Red/Black '93 with 164k miles
> Cincinnati, Ohio
> www.picturetrail.com/stevetatro 
> _______________________________________________
> Shotimes mailing list
> Shotimes@autox.team.net http://www.team.net/mailman/listinfo/shotimes
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