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  #16  
Old 06-22-2003, 11:00 PM
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Join Date: Jan 2003
Location: Sydney, Australia
Posts: 627
Quote:
Originally posted by Botnst
Using my VOM, I get about 12.5 volts at idle but don't know about amps, no ammeter and I don't recall exactly how to make a shunt...its been 30 years since I worked with electricity.

Is there a way to determine for sure whether my problem is the alternator?

Thanks for your guidance.

---chris
12.5 volts is about what you should see without the engine running. At idle, unless there is a heavy load, I would consider this too low. Check it with the engine at higher revs. If you can't get at least 13.8 volts you have a problem and will never fully charge your battery.
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