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Alternator whine after timing belt replacement

Discussion in '1st Gen. Tacomas (1995-2004)' started by NWcamper, Dec 29, 2010.

  1. Dec 29, 2010 at 6:36 PM
    #1
    NWcamper

    NWcamper [OP] New Member

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    Dual Battery, Winch
    After having my timing belt replaced (as per 90k mile prescription) my factory alternator now whines like a little b**ch, mechanic says my dual battery setup is working it too hard. I had the extra battery w/ isolator and winch installed a few years ago and have never had a problem, but now that I dropped a bunch of cash to get my truck tuned up, it sounds messed up.

    Mechanic said the belt was loose before? Everything worked fine as it was...

    Anyway, any suggestions as to what my problem might be, or what I might do to fix it? Did this guy F something up?

    Anyone have a trusted mechanic for their toyota rig in Portland?
     
  2. Dec 29, 2010 at 6:40 PM
    #2
    wildjerseyfirefighter

    wildjerseyfirefighter I sell fishing and fishing accessories

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    i have semi the same problem. I had a badass mechanic do my timing belt, now sounds like my power steering whines, and it never did it before.
     
  3. Dec 29, 2010 at 7:52 PM
    #3
    tsab916

    tsab916 Well-Known Member

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    Belt might be too tight...putting alot of pressure on the alternator
     
  4. Dec 29, 2010 at 8:08 PM
    #4
    Digiratus

    Digiratus Adventurer

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    Is it the original 90 amp alt? Or is it an high amp alt you added when you went to your dual bat setup?

    A squeak from power load (that's what I call the noise the alt makes when its working extra hard to catch up) is not a bearing noise. Besides, the system eventually does catch up and the "squeak" then goes away.

    You described the noise as a "whine", is it the bearing going bad? Big coincidence if it is. Is it a too tight belt putting pressure on the bearing? Easy enough to find out, loosen the belt a tad.

    Edit: I see it is the stock alt. I'd be quite surprised if the alt bearing was going bad with only 90K. Loosen the belt and see what happens.
     
  5. Dec 29, 2010 at 8:30 PM
    #5
    NWcamper

    NWcamper [OP] New Member

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    Dual Battery, Winch
    Thanks...over-tensioned belt seems like a good possibility, being the primary element changed between before and after, might as well give it a look...
     
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