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On 3 Feb, 18:55, "Ray O" <rokigawaATtristarassociatesDOTcom> wrote:[color=blue]
> "Crazzytown" <n...@000.com> wrote in message
>
> news:972592_baac2ec7f869f108b9e8642ea95c6150@autoboardz.com...
>
>
>[color=green]
> >I have a 1990 Toyota Celica everything was running perfectly fine
> > driving it around. One day parked it overnight and it wouldnt start
> > the next day. Thought ok. Battery must be dead. Even though it was a
> > brand new battery thought maybe I left a light on. Got a boost and
> > drove it back to where i live and left it running for 2 hours. Drove
> > it around for 10 minutes and parked it for the night. Went to start it
> > again the next day and nothing. Thought I somehow left the light on
> > again. Got a boost. And let it run for 2 hours.[/color]
>[color=green]
> > Went back to try and drive it around and the RPM's were going from
> > 1200 -1400 constantly up and down. But battery seems fine when I put
> > on the radio. As soon as I go to put it into reverse and press the
> > brake. The battery signal comes up. Everytime i hit he breaks the
> > battery light would come on. So I figure I had a problem with my
> > altinator. Got a miltimeter the next day. Yet another boost and
> > checked the battery. It read 15 amps. Should only be high 12's low
> > 13's if it is just the charge from the boost... Correct?. So i believe
> > I found it isnt my altinator. And I checked for corrosion on the
> > battery. 0.0 amps on the negative and 0.1 on the positive. So good
> > connections there. So I figure'd I'd let my car run for five minutes
> > and see what happened. Everything seemed fine. Turned all the lights
> > off and radio off in the car and left it for an hour. Went back to it
> > an hour later. The car had shut off by its-self.[/color]
>[color=green]
> > Can anyone please lend a hand on this one? Would mean a great deal.[/color]
>[color=green]
> > Thank you.[/color]
>
> When you checked the battery, you should check voltage, not amps. It should
> read somewhere from 12+ volts to 14.4 volts.
>
> When a car is idling, if the headlights, radio, heater fan, defogger, etc.
> are on, the alternator may not put out sufficient amperage to charge the
> battery.
>
> When the car will not start, check battery voltage. If battery voltage is
> sufficient, then the problem may be in the battery or starter connections.
> Check to make sure the battery is properly grounded.
>
> If the battery is more than 5 years old, it may have lost is ability to hold
> a charge and needs replacement.
> --
>
> Ray O
> (correct punctuation to reply)[/color]


When running fine the stock battery and alt will generally charge
enough with 5 mins running to re-start within 6 or 7 hours even if
from a flat battery start condition. I too would suspect the battery
was the fault here but the car stopping itself would suggest the alt
isnt charging the batt either or it would take up the slack? Battery
is the cheapest part to start the replacements at but if you're mis-
reading the meter and ts charging at 15v not Amps I'd say your alt is
over-charging which has likely toasted the battery. Ive never seen
more than 14.4v out of my celicas alt.