battery warning light on on 2003 Ford Focus

my battery light keep coming on. Diagnostics checked out okay.

by in Ocala, FL on September 06, 2010
1 answer
ANSWER by on September 06, 2010
dont believe the diag. you probably have a bad diode and have to replace the alternator. Roy
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The battery warning light keeps coming on and off. Took it in and they could not find anything. What should i do?