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1994 Volvo 940 Question: No charge

 

Question

seemetofixit, 2.3L 4 Cylinder Turbo, Damascus, OR, May 25, 2010, 23:01
 Rookie

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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  • Answer #1

    Bret Bodas from RepairPal Test Shop, May 26, 2010, 09:13
     Master

    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

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    Terika.Maskelah, July 29, 2010, 17:00
     Rookie

    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?

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