Tip & How-To about 2000 Ford Ranger SuperCab
If you keep replacing starters and alternators, they aren't the problem. Starters: check your battery's ground cable.
Alternators: Make sure you're also replacing the rectifier circuit. Alternators make alternating current and it must be converted to direct current. This happens in the rectifier, and arrangement of three diodes. Diodes are like a one way street for electricity. But sometimes, they fail and leak backwards.
Then they quietly drain your battery overnight. It drives a lot of people nuts figuring that one out.
Posted by Emilio... on
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