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Alternator Voltage Regulator


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Do the Reman Alternators from Autozone have an internal voltage regulator in them. This is for a EA71 in a 79 brat.

 

I thought that it would be in the alternator, but my charging system is reading 16V and above. Is this correct, or are there any consequences to this? The Alternator is brand new.

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  • 10 months later...
I need a new alternator too for the same year is there a better alternator i could replace it with?

 

You should start a new thread. But before you do - have a look at the search function as replacing externally regulated alternators with the newer internally regulated units has been covered many times. I think it's in the USRM even.

 

GD

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I worked for many many years repairing and rebuilding starters and alternators, on an externally regulated alternator (such as yours is) 99.9 percent of the time is going to be the regulator, the alternator is just the "yes man" in the equation, it does what the regulator says to do, and in your case at 16v, its asking it to do too much and will cause failure of the alternator, and can burn up wiring, cause expansion in your battery (heat from excessive high voltage vs. plates in a battery welded in stationary position) the plates bend and bulge in to each other when they touch they short out so to speak causing a defective battery.

 

As a side note, check the voltage at your battery as well as at the back of alternator, voltages should all be with in .2 to .4 volts, could be getting a false reading on your gauge.

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