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Faint whistle or whine while accelerating

Discussion in '3rd Gen. Tacomas (2016+)' started by jaro, Mar 8, 2021.

  1. Apr 3, 2021 at 12:20 AM
    #21
    davidsilva

    davidsilva New Member

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    I get that weird sound every so often and then it goes away. I don’t know what it is, but seems to be normal or at least common for the truck.

    The sound I can’t get past is the wind whistling sound coming from my driver window near the mirror. This one happens at 70mph consistently.

    Anyone else get this wind sound in the driver window or know how to fix it?
     
  2. Apr 3, 2021 at 5:37 AM
    #22
    ezatnova

    ezatnova Artax

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    Wildpeak 265/75/16, Headstrong Progressive AAL, 5100's w Emu 885s

    Wow. Bunch of geniuses at that dealership, huh? Lol. THREE diffs for a noise that a) is clearly from the front just past the firewall and b) only happens when the A/C is on. Yeah keep replacing those diffs! Lol

    Interesting that the new “random” A/C parts didn’t help.

    Just to clarify, you had the noise on your previous truck. You had the noise on your 2021. AND have the noise on your 2021 with a new engine?
     
    mabepossibly likes this.
  3. Apr 3, 2021 at 6:37 AM
    #23
    Yacha123

    Yacha123 New Member

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    Sadly, yes. At this point I've accepted it for what it is. Also, my noise doesn't just happen when the AC is on. It was all the time on both trucks. Exact sound in the video.
     
  4. Apr 3, 2021 at 6:47 AM
    #24
    ezatnova

    ezatnova Artax

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    strange. 99% of us with that noise can directly link it to the AC. Even if you disengage AC mid-noise it stops instantly.
     
  5. Apr 3, 2021 at 6:49 AM
    #25
    JakNY

    JakNY 30yr/360,000mi Plan

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    Had an annoying whine yesterday. Wife disembarked and no more whine.
     
  6. Apr 3, 2021 at 6:56 AM
    #26
    VB25

    VB25 Well-Known Member

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    I’ve determined it’s the AC causing the faint whistle on my truck. Don’t forget that in modern vehicles the AC has a mind of its own and sometimes runs when defrost is on, or sometimes comes on automatically when adjusting certain things.
     
  7. Apr 3, 2021 at 7:09 AM
    #27
    Harmon

    Harmon Well-Known Member

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    That is the same as mine. It doesn't last it doesn't bother me. Now if it was constant, at a certain speed then it would drive me crazy.
     
    flowinh2o and Canadian Caber like this.
  8. Apr 3, 2021 at 3:26 PM
    #28
    Canadian Caber

    Canadian Caber R.I.P Layne Staley 67-2002

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    B.C. Canada, eh
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    :rofl:
     
  9. Apr 19, 2021 at 10:51 AM
    #29
    ezatnova

    ezatnova Artax

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    !!!SOLVED!!!

    Everyone with the noise (and linked to A/C being on), use gap gauges to test your compressor clutch gap. Mine was out of spec on the too-small side. Took off the clutch and shimmed it out with another washer. PERFECT now. NO NOISE!

    Be warned these are tough to find washers. You BARELY need to add thickness. Best bet is to order the shim kit right from Toyota. I played around with thin washers to try and find the fix, but had to drill them out a bit to fit the bolt through it, which is a royal pain in a super tiny washer. It's a good temp fix until I get the real shim.

    There is a full page of detail in Techstream about the gap thresholds, which are 0.3mm - 0.6mm. FYI, mine was at 0.22mm. I would venture that most people with issues have the gap too small and need to shim it out.
     
    Last edited: Apr 19, 2021
  10. Apr 24, 2021 at 4:23 PM
    #30
    Dixie

    Dixie Active Member

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    5,000 miles on mine now ‘The whine’ is less noticeable then before, but still present. Usually hears it accelerating at around 40mph.
     
  11. Oct 26, 2021 at 8:18 AM
    #31
    WRDD Taco

    WRDD Taco Big Hobby Guy

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    My 2011 DCLB does this too. Light whistling noise when accelerating around 3,000rpm only. Sounds like it’s coming from the left side of the truck cannot tell if it’s from the cowl area, door or rear of truck.
     
  12. Oct 26, 2021 at 8:52 AM
    #32
    cryptolyme

    cryptolyme Well-Known Member

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    they all make this noise.
     
  13. Oct 26, 2021 at 5:31 PM
    #33
    WRDD Taco

    WRDD Taco Big Hobby Guy

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    Mine started within the last few thousand miles. I’m now at 205,xxx miles
     
  14. Oct 26, 2021 at 7:05 PM
    #34
    Amuzed2death

    Amuzed2death Well-Known Member

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    Just turn up the stereo. Its a truck based on 40 year old tech. Not a bently.
     
    Dirty Harry likes this.
  15. Oct 27, 2021 at 5:20 AM
    #35
    FL_TRD Sport

    FL_TRD Sport Very Well Known in His Own Home

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    I have the exact same sound as the video in post #9. It's very random and only does it at 30-40 mph when the RPMs are up just prior to the next gear change. Because it's so infrequent it's really not a bother. As long as it's nothing that's going to break I'm writing it off as one of the quirky noises this truck makes. I've had my truck a/c set to auto since I bought it in May. It's south Florida so the a/c is always on.
     
  16. Oct 27, 2021 at 5:41 AM
    #36
    ezatnova

    ezatnova Artax

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    a $50,000 truck. And my 1st and 2nd gens, based on that same “40 year old technology” didn’t do it.
     
  17. Oct 27, 2021 at 11:26 AM
    #37
    WRDD Taco

    WRDD Taco Big Hobby Guy

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    My 2nd gen recently began to do it. Not sure if my cowl intake mod has anything to do with it.
     
  18. Oct 27, 2021 at 11:27 AM
    #38
    ezatnova

    ezatnova Artax

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    if it does it with the AC off then it’s not the same thing. this noise is specifically caused by the shim/positioning of the AC clutch
     
  19. Oct 27, 2021 at 10:40 PM
    #39
    Gamester

    Gamester Well-Known Member

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    Thanks for sharing this. Got any pics of the fix? I’d like to try it. Got a part number for the washers?
     
  20. Oct 28, 2021 at 6:26 AM
    #40
    ezatnova

    ezatnova Artax

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    no pics but it’s just the shim washers between the clutch and AC. We just used washers close to the same size, not an official part, but Toyota must have them in their system somewhere. Most important thing is check the tolerance and see if it’s off.
     
    Gamester likes this.

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