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1992 Toyota Previa Battery or Alternator?

Tiny
IDEASMAN
  • MEMBER
  • 1992 TOYOTA PREVIA
  • 4 CYL
  • AWD
  • AUTOMATIC
  • 116,000 MILES
This is a Japanese-market turbo-diesel van. At idle, accessories, wipers, etc. Are very slow, and speed up noticably at higher engine speeds (although the wipers still have trouble keeping up with Vancouver rain!). Is this most likely a weak battery issue, or a charging problem? The van has no trouble starting, and I haven't heard any belt noise. No warning lights have come on. Maybe I'm being too picky, but I want to sort everything out before the cold weather sets in!
Thanks for your help!
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Friday, December 5th, 2008 AT 12:40 AM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

Get the battery load tested, this is the only true way to test the battery condition, and a simple charge rate tests for the alternator will show you how it is preforming, get these done first.

Mark (mhpautos)
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Friday, December 5th, 2008 AT 3:07 AM

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