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Old 12-20-2002, 08:35 AM
BobK BobK is offline
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Join Date: Nov 2001
Location: North Central Kentucky
Posts: 1,061
Charge up the battery like suggested then test your output voltage (you may not get reliable readings with undercharged battery). Hook up your meter to the positive post on the alt and the frame of the alt. Engine running, accessories off. If you don't get at least 13.5 volts when running, your alt is in trouble. Oh, with the engine stopped, can you turn the fan on the alt by pushing on it and making the belt slip? If so, just tighten the belt. Have seen a slightly loose belt cause reduced output . If low voltage is not caused by loose belt, try a new regulator like others have said. You are only gambling the price of the regulator that way and you might luck out.
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