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Well... 140-160

uid 37893's pic
posted by  R Salesman on  Mon Dec 11 10:44 CST 2006
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last visit: Mon Jul 30 19:30 CST 2012
[RELATED]

12.5V to 13.2V, while not great, is not completely unacceptable charging for an old alternator. The good news is that definitely shows that the alternator IS charging your battery.

At this point, I think I would start looking for excess drain on the battery. To do this, disconnect the battery altogether and check the voltage at the terminals. Then hook the battery up, and check the voltage without the car running: put your red probe on the positive connection (not terminal) and use some ground other than the negative portion of the battery. If the voltage is significantly lower, then you've got a drain on the battery somewhere. Check glove box lights, trunk lights, etc.
--
74 164E auto -- looking to convert to manual M410






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