Isn't that the alternator's job? to cut off charging to the battery? I would
get the alternator checked out.
IMHO
Valerie Stabenow, 62 MGA MkII, 67 TR4a, 69 XK-E FHC, 73 TR-6, 81 Corvette
Coupe
----- Original Message -----
From: "Mackay, Steve" <steve.mackay@analog.com>
To: <6pack@autox.team.net>
Sent: Monday, May 13, 2002 2:39 PM
> Charging question. I noticed a very small amount of battery acid on the
battery
> shelf next to the battery. I inspected the battery for cracks with
negative
> results. Removed the battery, naturalized the area and installed the
battery. At
> this point I believe I have an over charging problem. I did the following
> checks. DVM across the battery with everything disconnected battery read
12.9 v.
> With the DVM meter connected I started the car. During starter cranking
period
> DVM reading dropped to 11.9 v (Normal) as soon as the car started the DVM
meter
> went to 13.5 volts and climbed over the next 60 seconds to 14.2v @ 1900
rpm's.
> After driving the car for over an hour the meter on the dash and the DVM
never
> dropped below 14.2v. My question
>
> 1. Should it take 60+ seconds for the DVM and the amp meter on the dash to
climb
> from 13.5v to 14.2 volts?
> 2. Regardless of the run time should the meter always be reading > 14.v
when
> running. Doesn't the system drop back to 12.5v at some point?
> 3. What is the most common problem, Alternator?
>
> History - New battery, Rebuilt alternator, New wire harness, The car has
5k on a
> total frame off rebuild
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