New alternator new battery still won't charge

Preston Downey

Asked by Dec 27, 2014 at 01:54 PM about the 1997 Ford Expedition

Question type: Maintenance & Repair

1997 Ford expedition 6.1 Triton this
is the third new alternator I've tried

3 Answers


bummer to say, but you can get that many bad ones. could be a wiring problem too, but the alternator is easy to test yourself with a cheapy multimeter. Set it to volts D/C. hook it up to the battery with the engine running. red lead to pos, black to neg. you should have 13.5-14.5 volts or so.


Also check battery connections. They must be clean and tight for battery to accept the charge. Also check the negative battery connections on the frame and motor


What test did you do to decide to spend that much money on a new battery and alternator? If that didn't take care of it then it could be a control module.

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