Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

16 volt charge?

Old 02-27-2012, 03:31 PM
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oxfordbp
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Default 16 volt charge?

Why am I charging at 15-16 volts? Is that ok, or is something off?
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Old 02-27-2012, 03:37 PM
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1slow67
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That sounds like your voltage regulator is shot.
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Old 02-27-2012, 03:51 PM
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oxfordbp
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Originally Posted by 1slow67
That sounds like your voltage regulator is shot.
Any way to Check for sure?

Can I drive it that way for a little bit, or will I fry the battery?
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Old 02-27-2012, 04:19 PM
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1slow67
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When mine went bad we got extra voltage and when we drove it around there would be a sulfur smell of the battery being overcharged.
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Old 02-27-2012, 08:40 PM
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Yeah, don't drive it like that. You'll toast the battery in short order. Definitely a regulator issue.
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Old 02-28-2012, 06:59 AM
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Oxnard Montalvo
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Unless you're a stickler for detail install an electronic voltage regulator. They aren't a whole lot more money than a mechanical one, are readily available, and provide more consistent operation.
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Old 02-28-2012, 06:38 PM
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Originally Posted by oxfordbp
Any way to Check for sure?

Can I drive it that way for a little bit, or will I fry the battery?
The fact that you're getting 15V or more proves it. You will fry the battery, ignition, and possibly other items over time. The car should operate at approx 14V, so I wouldn't plan to go very far.
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