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Truck is discharging power

Tiny
OLUNDBB
  • MEMBER
  • 1999 FORD RANGER
  • 121 MILES
My headlights started flickering a few weeks ago and the gauge started showing discharge on and off so I replaced the alternator with a new one. It still does the same thing but now shows way overcharge on a regular basis and occasionaly a discharge. I replaced the alternator and still have the same problem only now it will show a high overcharge and occasionally still a discharge. The alternator is brand new and the battery is only about a year old and the belt is tight
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Saturday, January 14th, 2012 AT 9:30 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Might want to have the computer controlled of the alternator field generation circuit checked-double check all wiring/connections
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Saturday, January 14th, 2012 AT 9:38 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Any applicable trouble codes? I'd use a digital multimeter and double-check the charging system.
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Saturday, January 14th, 2012 AT 9:41 PM

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