Other than the alternator what could cause my voltage to be low?

Tiny
DALTIS
  • 2002 TOYOTA SOLARA
  • 110,000 MILES

I have a 2002 toyota solara. The alternator was only putting out 10v. I replaced it with a good used alternator. It is now putting out between 10-12v while idling and 12.2v while revving engine. Other than a faulty alternator, what should I check next? I replaced the battery about 2 months ago.

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Friday, July 6th, 2012 AT 1:39 AM

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Tiny
CARADIODOC
  • EXPERT
  • 26,495 POSTS

First check for 12 volts at the generator's output terminal. It should have full battery voltage all the time. If you find 0 volts with the engine off and high voltage with the engine running, look for a blown fuse bolted into the under-hood fuse box.

Next, there must be at least one small wire that has full battery voltage on it. If that is missing, look for a smaller blown fuse.

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Friday, July 6th, 2012 AT 1:53 AM

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