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Q: No charge on 1994 Volvo 940

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Car dies because of low volts, will not charge. New alternator installed, does this car have an external voltage regulator? if so where? what should the batt volts be at while car is running with headlites on full load?
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The voltage regulator is built in to the alternator. Perform a voltage drop test on you battery cables, and especially the ground and + cable to the alternator.
Here is some info on how to perform this test: http://www.excelauto.com/online/Tech.d/altvdt.html
I am having the same issue with a 1995 940 wagon. Changed the alternator and the car still lost power and the battery didn't charge. I had the old alternator and battery tested and they both passed. I was told by a guy at anauto parts store near my home that this car has an external Voltage Regulator and he was even able to give me a price on it. Problem is...I can't find the Voltage Regulator!!! LOL.

Was the sales guy wrong or does my car really have an external Voltage Regulator?