Question about 2003 Ford Mustang
Take the battery back to the auto parts store you purchased it from. Ask them to charge it back up to full and to do a load test on it to see if the new battery has a bad cell. If the battery checks out ok then your problem is with your alternator. You can verify this buy putting a volt meter on the positive and negative terminals you should be seeing around 13.5 volts right after the car starts up so you see the alternator is putting out. If your getting around 12 to 12.5 volts then the alternator is malfunctioning and probably needs replacement.
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Posted on Apr 10, 2011
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Posted on Jan 02, 2017
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