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Moaning/Whining noise?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Sig45, Jun 4, 2016.

  1. Jun 4, 2016 at 2:40 PM
    #1
    Sig45

    Sig45 [OP] Well-Known Member

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    So I changed out my battery recently. Ever since I'm now hearing a low pitched moaning/whining noise that's asociated with engine rpms.

    I've ruled out power steering as it doesn't do it when turning steering wheel fully in both directions.

    Serpentine belt? Perhaps it was this that caused battery to not charge and need replacement?

    Just odd that I now hear it or plain coincidence.

    Thoughts?
     
  2. Jun 4, 2016 at 2:44 PM
    #2
    EatSleepTacos

    EatSleepTacos Well-Known Member

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    I am most certainly shooting from the hip here (complete and total guess) but maybe it's something associated with the alternator? My logic is that it's electrical and belt driven, so it's closely related to the battery.
     
  3. Jun 4, 2016 at 2:46 PM
    #3
    pruchai

    pruchai KAMA3

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    Not enough...
    Whining noise is most likely caused by bad ground connection somewhere.
     
  4. Jun 4, 2016 at 3:03 PM
    #4
    Sig45

    Sig45 [OP] Well-Known Member

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    The sound appears to be originating from the drivers side.
     
  5. Jun 4, 2016 at 3:05 PM
    #5
    Sig45

    Sig45 [OP] Well-Known Member

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    All battery connections are snug. I sprayed terminals with protectant after cleaning & reconnecting cables.
     
    Last edited: Jun 5, 2016
  6. Jun 4, 2016 at 3:07 PM
    #6
    Sig45

    Sig45 [OP] Well-Known Member

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    If it's alternator, that's still under warranty (I have Toyota Platinum extended out to 6yr/90K miles).
     
  7. Jun 4, 2016 at 3:18 PM
    #7
    Sig45

    Sig45 [OP] Well-Known Member

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    I'm no electrical expert, is there any easy way to identify a possible bad connection?
     
  8. Jun 4, 2016 at 3:21 PM
    #8
    pruchai

    pruchai KAMA3

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    Not enough...
    Sorry, can't look right now, but google it and the is a Crutchfield page somewhere that gives you some tips
     
  9. Jun 4, 2016 at 3:29 PM
    #9
    Clearwater Bill

    Clearwater Bill Never answer an anonymous letter

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    Probably picked the wrong denomination. :D
     
    Lester Lugnut likes this.
  10. Jun 4, 2016 at 3:30 PM
    #10
    Sig45

    Sig45 [OP] Well-Known Member

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    GD auto correct....just fixed! :amen:
     
  11. Jun 4, 2016 at 4:49 PM
    #11
    Pork Chopper

    Pork Chopper Well-Known Member

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    I had the same whining noise, dropped the wife off and it went away.
     
  12. Jun 4, 2016 at 6:46 PM
    #12
    EatSleepTacos

    EatSleepTacos Well-Known Member

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  13. Jun 4, 2016 at 6:50 PM
    #13
    Sig45

    Sig45 [OP] Well-Known Member

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    Funny stuff!

    Seriously though.....the noise is more of a low pitched moan/hum and less of a whine.
     
  14. Jun 4, 2016 at 7:35 PM
    #14
    Jimmyh

    Jimmyh Well-Known Member

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    Go to Autozone or another parts house and have the alternator load tested.

    As for the poster that is talking about Crutchfield and bad grounds. I don't think the noise is coming from the stereo.
     
  15. Jun 5, 2016 at 3:39 AM
    #15
    Sig45

    Sig45 [OP] Well-Known Member

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    Thanks, I agree, no stereo noise, so I don't think it's a ground issue. I'm guessing Alternator as well. I need a few things at Advanced Auto today so while I'm there I'll have them check the load. If it's the Alternator, off to the dealership.
     
  16. Jun 5, 2016 at 4:28 AM
    #16
    Blkvoodoo

    Blkvoodoo a Hooka smoking caterpillar has given me the call

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    You sprayed terminals BEFORE connecting them ?

    Go back take them apart and clean everything off, then reassemble THEN coat them.

    The protectant can be a "dielectric" which inhibits current flow, making your alternator work that much harder to charge battery which could explain the whine.
     
  17. Jun 5, 2016 at 5:47 AM
    #17
    Sig45

    Sig45 [OP] Well-Known Member

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    Sorry, I cleaned everything before I reconnected, they sprayed after. Apologize for the misstatement.
     
  18. Jun 5, 2016 at 6:52 AM
    #18
    Sig45

    Sig45 [OP] Well-Known Member

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    Charging system is fine. Just had tested at Advanced Auto. Now I'm thinking belt or a fully.

    [​IMG]
     
  19. Jun 6, 2016 at 4:26 PM
    #19
    Sig45

    Sig45 [OP] Well-Known Member

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    Update: Took it to dealership today and they could hear it but can't pinpoint it to anything. They noted my records for the record.

    All of the following checked out fine:
    Alternator
    PS pump
    Water pump
    Belt & pulleys
    Fan
    AC compressor
    Air pump

    Didn't charge me for the diagnosis.
     
  20. Jun 6, 2016 at 4:54 PM
    #20
    EatSleepTacos

    EatSleepTacos Well-Known Member

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    And the plot thickens! I hope you get it worked out man.
     

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