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Re: Test Alternator Output
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Posted by John T on August 08, 2006 at 08:46:40 from (66.244.90.5):
In Reply to: Test Alternator Output posted by DelMN on August 08, 2006 at 06:49:02:
Del, The no load open circuit output voltage from an alternator IS NOT ANY VALID OR LEGITIMATE INDICATION of how it performs when attached to a load such as a battery. I agree with the good advice below, if a good battery reads aroud 12.6 volts setting but rises to 13 and 14 and a lil over attached to a good alternator, its charging. Then if it falls off slightly as the battery achieves full charge, its regulator is also functioning properly. Measuring how it performs atached to a good load is the true test of an alternators performance for one who doesnt have the correct GM type of testing equipment in my opinion. John T
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