It sounds like a bad alternator. However, I would recommend checking all connections at the new battery to make sure they are clean and tight and not damaged. Also, make sure the round on the engine block is clean and tight. If they are, remove the alternator and have it bench tested at the parts store. The regulator is part of the alt, so they will check both. If it checks good, then chances are the fuseable link between the alt and battery is bad.
Let me know what you find, and thanks for using 2carpros. Com.
Joe
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Saturday, January 9th, 2010 AT 9:44 PM