Why does this car not hold a charge when the altenator and battery are good?

Tiny
SHOP.139@MEINEKE.NET
  • MEMBER
  • 1999 TOYOTA SIENNA
Altenator is good and battery is good
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Monday, April 30th, 2012 AT 6:55 PM

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Tiny
CARADIODOC
  • EXPERT
Something is probably draining the battery when the engine is off. Does the battery charge while the engine is running?
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Monday, April 30th, 2012 AT 7:00 PM
Tiny
SHOP.139@MEINEKE.NET
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There is no output from the altenator 12volts running in battery only we've tried 3 altenators and nothing happens altenator fuse 140amps is ok
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Monday, April 30th, 2012 AT 7:41 PM
Tiny
CARADIODOC
  • EXPERT
Have you measured the voltages on the smaller wires? One has to have voltage to run the internal voltage regulator.
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Monday, April 30th, 2012 AT 9:29 PM

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