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Gordon Rankin's Avatar
 
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battery not charging

I saw a posting here within the last few days that said that if the battery charging light on the dash board was out that the battery would not charge up.. Clarification please???
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Old 06-09-2004, 07:45 PM
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Not true.

Mine goes out after revving up, but battery doesn't like to stay charged. Voltage regulator and output of alternator are nominal... What gives? Bad battery?
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Old 06-09-2004, 07:53 PM
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Re: battery not charging

Quote:
Originally posted by Gordon Rankin
I saw a posting here within the last few days that said that if the battery charging light on the dash board was out that the battery would not charge up.. Clarification please???
The light bulb in the dash is actually part of the circuit ...so if it doesnt come on when you turn the key to on then your battery wont charge. Weird problem.

The most likely cause of charging problems is the voltage regulator (happened to me) or bad battery (happened to me).
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Old 06-09-2004, 08:41 PM
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Quote:
Originally posted by Brando
Not true.

Mine goes out after revving up, but battery doesn't like to stay charged. Voltage regulator and output of alternator are nominal... What gives? Bad battery?
sounds like the voltage regulator actually.
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Old 06-09-2004, 08:43 PM
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it's like xmas tree lites in series.
if the alt lite doesn't come on with the key in the ignition, car not running, the system won't charge.

if the light doesn't come on when the key is turned on, how will you know if the alternator fails.

i posted this a while back and it happened years ago in a volvo with a bosch ignition system, same thing.

no alt lite with key on, both systems showed a little over 12v when running, replaced the lite bulb in both cases and showed 13.7/8 after being started.

the volvo info came from a volvo service writer and he claimed it was one of the poorest designs he'd ever seen and golly gee, it's a bosch system in the p-car.

i'm used to checking lites when the system is powered up, silly lites like for oil pressure, generator + a few more and then making sure all of the lites are out as oil pressure/voltage come up before i go to work and before driving to work.
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Last edited by bearone2; 06-09-2004 at 09:24 PM..
Old 06-09-2004, 08:55 PM
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What would Darth Vader do
 
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Thanks
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Old 06-09-2004, 09:06 PM
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you're welcome
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87 944S, alpine white, 5sp died a violent death
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Old 06-09-2004, 09:28 PM
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