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Very odd sound......

Discussion in '3rd Gen. Tacomas (2016+)' started by ARNIE R, Sep 2, 2019.

  1. Sep 2, 2019 at 8:53 PM
    #1
    ARNIE R

    ARNIE R [OP] Active Member

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    Leesburg, VA
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    Fender gravel guards; Side step bars; Bug shield; Vent shades; Body side door moldings; Door edge trim; Tonneau cover
    So, anyway....

    I just returned from a 6 week stay in Florida today (assisting my elderly parents with some med issues).

    Instead of the usual RT 95 method, which I have been using for years, I decided to take my time and utilize the backroads for the entire 3 day journey back home. A lot more scenic and quieter without all those 18 wheelers about to run you down.

    Normally, I listen to Sirius XM radio and like the relaxing stations that play "spa" type soothing music. Today, I began to become aware of a low pitched sound that seemed very regular and cyclic, so I attributed it to something from the music. After all, it is supposed to be relaxing. Trouble was, it was present in all of the songs being played.

    Turned the radio off and listened. It was still there. I can't really explain exactly what it sounds like except that it reminds me of a very low pitched sound that reminds me of someone blowing lightly across the top of an open glass bottle, only with a slight "hollow metallic" ring to it.

    It is very rhythmic, and can be heard almost exactly 20 seconds apart as I actually timed it with my cell phone timer. Sometimes, it is slightly louder or quieter than the previous one before it, but it is definitely very steady and precise.

    It happens during coasting, acceleration, going uphill, downhill, around curves, etc. I even heard it down to about 25-30 mph while going thru a small town.

    I really can't say if today was the first day it started, as I do drive a lot in heavier traffic and frequently have the windows open.

    Really, I am not making this up. Any thoughts out there? Truck only has slightly over 4K on it.
     
  2. Sep 2, 2019 at 8:58 PM
    #2
    AKGSD

    AKGSD Well-Known Member

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    The blowing over a bottle noise /sounds/ like the typical rear diff howl - but that happens based on speed and throttle - not randomly every 20 seconds....
    ....
    Good luck!
     
    ARNIE R [OP] likes this.
  3. Sep 2, 2019 at 9:11 PM
    #3
    ARNIE R

    ARNIE R [OP] Active Member

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    Fender gravel guards; Side step bars; Bug shield; Vent shades; Body side door moldings; Door edge trim; Tonneau cover
    So, is that "normal" or something to be concerned about? Probably taking it in for its 5K checkup within the month.

    As far as being every 20 seconds, the sound was very low but audible and timely. I was doing primarily highway driving at steady speeds or long straight backroads where I was definitely aware of it with the windows closed. My last hour of driving was either open windows or torrential rain, so I could hear squat then.
     
  4. Sep 2, 2019 at 9:12 PM
    #4
    Lawfarin

    Lawfarin Well-Known Member

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    Lower control arm or mirror whistle?
     
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  5. Sep 2, 2019 at 9:14 PM
    #5
    JaCado

    JaCado Sutton, Popcorn Sutton.

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    This ^^^^ or the diff howl at around 45 to 50 mph.
     
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  6. Sep 2, 2019 at 9:15 PM
    #6
    Lord Humongous

    Lord Humongous The Ayatolah Of RockNRolla

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    https://www.tacomaworld.com/threads/lord-humongous-gigahorse-build.436524/
    The holes on the lower control arms are known to make random whistling noises on the highway. It's usually exacerbated with a lift kit due to moving the LCAs further away from the the body. You can fix with plastic hole plugs or skid plates.
     
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  7. Sep 2, 2019 at 9:18 PM
    #7
    ARNIE R

    ARNIE R [OP] Active Member

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    More like if you took an open glass bottle and blew across the top very lightly just enough to make the sound appear, then stop. It was very precise in its 3-4 second length and 20 second appearance. I could not determine where it sounded like it was coming from, IE., front, back, inside, outside, etc.
     
  8. Sep 2, 2019 at 9:21 PM
    #8
    JaCado

    JaCado Sutton, Popcorn Sutton.

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    ARNIE R [OP], Tommyb08 and shakerhood like this.
  9. Sep 2, 2019 at 9:22 PM
    #9
    Dacon

    Dacon 2017 Tacoma TRD PRO Quikrete

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    shakerhood, cshrum and ARNIE R [OP] like this.
  10. Sep 2, 2019 at 10:21 PM
    #10
    Dr. Emmett Brown

    Dr. Emmett Brown Well-Known Member

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    Flux capacitor
    What is the mirror whistle?
     
  11. Sep 2, 2019 at 10:25 PM
    #11
    JaCado

    JaCado Sutton, Popcorn Sutton.

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    My driver side mirror howls at certain speeds and sometimes if the wind is just strong enough in the right direction. It does it a little worse now that someone drove by and smacked it with their mirror when parked on the street. (Narrow roads). So its cracked and doesnt quite fit/line up just right.
    I see it more of an issue with the upper trims that have the turn signal there.
     
  12. Sep 2, 2019 at 10:26 PM
    #12
    Dr. Emmett Brown

    Dr. Emmett Brown Well-Known Member

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    Flux capacitor
    Is it a similar sound to the LCA and rear diff howl?
     
  13. Sep 2, 2019 at 10:28 PM
    #13
    JaCado

    JaCado Sutton, Popcorn Sutton.

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    To my knowledge, yes. Not many have complained about it though.
     
  14. Sep 2, 2019 at 10:30 PM
    #14
    CoreyJames

    CoreyJames Well-Known Member

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    Turn the radio up:lalala:
     
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  15. Sep 3, 2019 at 4:30 AM
    #15
    MaTaco_4x4

    MaTaco_4x4 Well-Known Member

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    I had a wheel bearing go bad on a Mitsubishi Diamante. Very rhythmic. The period between hums changed with speed though.

    Try turning off the A/C.

    If the sound goes away, your blower fan is wonky. There's a TSB for that I believe.
     
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  16. Sep 3, 2019 at 4:32 AM
    #16
    stun gun

    stun gun Suffer Crew

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    Switch to slayer.
     
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  17. Sep 3, 2019 at 6:07 AM
    #17
    ShirtTucker

    ShirtTucker Un-Known Member

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  18. Sep 3, 2019 at 6:53 AM
    #18
    Boss hoss

    Boss hoss Well-Known Member

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    I just turn my hearing aids off and my truck is like a Rolls Royce then. :thumbsup:
     
    ARNIE R [OP] likes this.
  19. Sep 3, 2019 at 7:19 AM
    #19
    Tacowin1013

    Tacowin1013 Well-Known Member

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    OP has a 2019 so the LCA whistle 'should' have been addressed. It was primarily found in the 2016 models, even my 2017 came with the LCA already plugged
     
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  20. Sep 3, 2019 at 8:14 AM
    #20
    RangerComa

    RangerComa High Speed Dirt Limo Adventure Rig

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    Op, did you run the fan on all the time? It’s possible you are hearing the Darth Vader breathing sound that comes with the HVAC system.
     
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