My alternator is not charging the batteries or working properly

Asked by Apr 04, 2014 at 09:46 AM about the 2002 Ford F-250 Super Duty

Question type: Maintenance & Repair

My 7.3 diesel is having charging problems.  Just replaced the alternator.  Batteries are good.  I am loosing electrical while driving.  Guages go out, vehicle barely runs.  Will die if I turn on any accessories.

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What is the voltage of the battery with the car of and on? Use your multimeter and post back,

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