Thread: What causes system voltage to exceed 17 volts?
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Old 05-04-2013, 08:34 AM
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Ron61 Ron61 is offline
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2nd what CowtownCobra said. Don't always trust the auto store alternator testing. You can check your regulator again and everything but the 18 volts is to high for sure. Your new alternator doesn't have an internal regulator in it does it?

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