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post #1 of (permalink) Old 08-31-2012, 03:18 PM Thread Starter
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Alternator/voltage regulator test

Question regarding testing the output of the alternator and the voltage regulator. I went to take the 66 for a spin and the battery was very low. Car wouldn't start. I jumped the battery and it started right up. I observed the ammeter and it was at zero. Didn't move one way or the other during driving. I then parked it and charged the battery for about 2 hours. I tried starting it the next day and it started immediately with a strong battery. There is no apparent reason for the battery to have discharged and I'm wondering if the alternator is not working or the VR is defective. How would I test each part to determine?
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