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Old 01-19-2010, 06:11 PM
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ElmoIsBold
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2000 Expedition w/4.6 - how to test voltage regulator?

Thread title should say it all, but the specific questions I have are:

1) where are the test points? Need I remind anyone how general the Chilton's manuals are? Mine is not doing me much good.

2) at what RPM should I expect the alternator voltage to exceed battery voltage in an obvious way?

In other words, I love my truck, I'm handy with tools, I own a bunch of them, and I have a Bachelors degree in Electrical Engineering (though I refuse to let that hinder me).

I'm getting battery voltage from the alt at idle.

Please help!

Elmo