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Ford External Voltage Regulator Test
Ford External Voltage Regulator Test. I just have the other three terminals properly hooked up (a to bat, s to stator, f to field). It should be noted that recent concerns regarding pcm regulator failure when bench testing units on the d&v tester has been narrowed down to a.

1) if one wire should give some crazy reading that should indicate it's ac current (input). There are cutoff circuits in their too to keep from charging too mutch normally. If in doubt, just unbolt the alternator and the regulator, then haul down to local auto parts store.
Consult The Vehicle Repair Manual For Your Particular Model To Conduct This Test, If Necessary.
Most of the ones around here have some sort of testing machine which will spin over the alternator, and then a rack for testing the regulator. All the regulator does is adjust the field coils of the alt so it charges a lot or a little. The regulator reacts to this by functioning in its primary voltage set point mode.
The Car Is Running A Little 302, And It Used An External Voltage Regulator.
It should be noted that recent concerns regarding pcm regulator failure when bench testing units on the d&v tester has been narrowed down to a. I wired the regulator terminals correctly, but didn't use the i terminal, since i always assumed that is only for a charge indicator light on the dashboard. This test bypasses the voltage regulator, so you can have a good alt with a bad (internal, external, or remote) regulator.
This Regulator 'Input' Pin Provides Charging System Reference Voltage To The Regulator.
As / external voltage sense: I just have the other three terminals properly hooked up (a to bat, s to stator, f to field). Be suspicious here too, for if either of them show up 1/4 volt low, the clerk will say they are bad.
2) If One Wire Gives A Steady Voltage Reading, That Wire Should Be The (Dc Output).
If voltage output remains at a normal. In todays video we cover how to diagnose a first gen ford alternator and test the alternator or voltage regulator.tools used in the videovolt meter: To test your vehicle’s voltage regulator, you’ll need a multimeter, which reads the voltage running through your battery.
S = Stator Of Alternator.
Note and record the voltage reading. A= battery, to alt and battery. The exact charging voltage may be as low as 13.2 volts or as high as 14.2 volts.
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