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Have a charging system problem

Tiny
ANONYMOUS
  • MEMBER
  • 1994 VOLVO 850
  • 175,000 MILES
Have a charging system problem. Battery drained, then replaced. 4 days later, drained new battery. Replaced alternator(bad regulator), and charged battery. Autozone checked, all systems checked out. Two weeks later, noticed faint battery light indicator on. Turned lights on, battery light got brighter. The car also quits running very sporadic. Never would quit running for my mechanic. Any thoughts
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Friday, December 21st, 2012 AT 8:50 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,727 POSTS
Suspect a bad diode in the generator. When one of the six is defective, you will only get exactly one third of the generator's rated output current and that's not enough to run the entire electrical system. A load-test will show the low output, and "ripple" will be very high.
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Saturday, December 22nd, 2012 AT 5:46 AM

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