Thread: What causes system voltage to exceed 17 volts?
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Old 05-05-2013, 01:49 PM
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Replaced the alternator and the voltage regulator and the ammeter no longer runs up to 45 Amps, and the voltage is rock-solid at about 14.5V.

There was a big sticker on the alternator warning that the voltage regulator should be changed at the same time. The new alternator is a NAPA/Motorcraft unit, made in the USA.

In regard to the resistance between the I and the F terminals of the voltage regulator needing to be between 0 and 10 Ohms: I'm not buying it. I read it in the article on the web, but when I tested my brand new voltage regulator, it wasn't an open circuit but it was about 10 MOhms. However, the VR and Alt work fine.

I think I'll go for a test drive!
Cheers,
DD
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