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Battery charge problems

Tiny
PAULE18JOKER
  • MEMBER
  • 1999 DODGE DURANGO
  • V8
  • 4WD
  • AUTOMATIC
  • 114,000 MILES
My 1999 dodge durango 5.7l v8 4x4 battery will not hold a charge I have replaced the battery twice and now I have replaced the alt. And still cant seem to find the problem. Not quite sure were else I should start can you help?
Sunday, November 14th, 2010 AT 2:39 AM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
Start by measuring the battery voltage while the engine is running. You must find between 13.75 and 14.75 volts. If it is low, measure the voltage on the two small nuts / terminals or the two small wires plugged into the back of the alternator. There will only be voltage there when the engine is running. One must have full battery voltage and the other one must have less but not 0 volts. That second voltage will tell us where to go next.

Caradiodoc
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Sunday, November 14th, 2010 AT 4:04 AM

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