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2021 engine whine /howl

Discussion in '3rd Gen Tundras (2014-2021)' started by General Motors, Jan 27, 2021.

  1. Jan 27, 2021 at 4:16 PM
    #1
    General Motors

    General Motors [OP] New Member

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    2021 Tundra SR5 SX
    Does anyone else experience high pitch engine whine or howl at approx 60 mph cruising along
    This seem to be the sweet spot and will it dissipates when you take foot off gas or go past 60-65 mph . It’s pretty distracting and drowns out the radio

    Thanks
     
  2. Jan 27, 2021 at 4:36 PM
    #2
    RickPlatinum2020

    RickPlatinum2020 New Member

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    Nothing like that on my ‘20...
     
  3. Jan 27, 2021 at 4:42 PM
    #3
    WILLINH

    WILLINH New Member

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    Not on my 19 either.
     
  4. Jan 27, 2021 at 5:27 PM
    #4
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    Only problem I have with my truck is for some reason the speedometer keeps creeping up and the fuel guage keeps creeping down. Might need to see if moving the seat back will help.
     
    P-Factor, LS3, Terndrerrr and 7 others like this.
  5. Jan 27, 2021 at 5:50 PM
    #5
    General Motors

    General Motors [OP] New Member

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    Ok item for dealer to check out
     
  6. Jan 27, 2021 at 5:51 PM
    #6
    Bronzeback

    Bronzeback New Member

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    Mine whines at 2k RM throughout most gears when cold
     
    Airn890 likes this.
  7. Jan 27, 2021 at 6:08 PM
    #7
    landphil

    landphil Messy burgers taste better.

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    BC, Canada
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    It’s the screen in the throttle body gasket causing a throttle-dependant whistle. A Sequoia gasket without the screen fits and cures the noise.
     
  8. Jan 27, 2021 at 7:01 PM
    #8
    Bronzeback

    Bronzeback New Member

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    not a whistle, mines a whine. Sounds like a supercharger. Lots of guys have it.
     
  9. Jan 27, 2021 at 7:12 PM
    #9
    Oats87

    Oats87 Pumpkin Rider

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  10. Jan 27, 2021 at 7:12 PM
    #10
    landphil

    landphil Messy burgers taste better.

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    If it changes / comes/ goes with throttle / load rather than RPM, and it’s coming from up front it’s the screen. Or you can pick fly poop out of the pepper. :notsure:

    Mine does it, although I can’t say I’ve noticed in the last two years. One day I’ll get to it. LOL
     
    JimboSlice413 likes this.
  11. Jan 27, 2021 at 7:16 PM
    #11
    JimboSlice413

    JimboSlice413 Super Nice Guy

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    It is like a dog whistle. It almost made me trade my truck in when it was still fairly new. My wife couldn't hear it at all. A little internet searching led me to that little screen. I took a pair of dikes to it and never heard it again
     
    Terndrerrr and landphil like this.
  12. Jan 28, 2021 at 5:59 AM
    #12
    Bronzeback

    Bronzeback New Member

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    I took my screen out about 6 months ago and replaced it with the sequoia gasket. Mine is a bearing or a pulley or maybe air injector pump. I'll have to get it looked at next service I'm sick of hearing it.
     
  13. Jan 28, 2021 at 6:19 AM
    #13
    Clemsonman14

    Clemsonman14 New Member

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    It’s definitely the screen. Switched mine out less than a month after I bought it. Do yourself a favor and just buy the oem one for the sequoia instead of cutting it out. It’s like $10 maybe. Coming up on a year of ownership now and honestly forget that I did this until someone brings up the whistle topic
     
  14. Jan 28, 2021 at 6:41 AM
    #14
    BecauseRacecar

    BecauseRacecar New Member

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    Did anyone figure out the logic behind the screen being there in the first place? Is it just in case the air filter fails or something, to prevent filter media shreds from entering the engine? And why isn't it on the Sequoia?
     
  15. Jan 28, 2021 at 7:19 AM
    #15
    JohnLakeman

    JohnLakeman Burning Internet Daylight

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    I have no clue what original thinking was for the screen, but upstream screens are often used in air ducts to generate turbulence that maintains more uniform distribution of air flow across the duct downstream. It's doubtful, IMO, that the screen is there to prevent FOD (filter debris into throttle body).

    I also can't explain why the screen would be desirable in the Tundra intake, and not in the Sequoia, unless Sequoia development engineers heard the whine and thought it unacceptable for a high-end family SUV. Maybe they decided to accept the penalty of not having whatever the screen is providing, in favor of reduced noise level in the cabin.
     
    BecauseRacecar likes this.
  16. Jan 28, 2021 at 7:41 AM
    #16
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    It might be that each manufacturing location has a different parts supplier. Sometimes one supplier cannot fill all the demand. Plus people do make mistakes, so each may have been provided a different drawing or set of manufacturing specs leading to each one making a slightly different design. QA may have decided well we already have tens of thousands made out of spec, let’s approach engineering. Then they could have said hmm maybe we can get a discount and still use them with no noticeable or negative impact. Resulting in some with, some without. Btw, IMO the only thing branded Toyota that I would consider high end is the Landcruiser.
     
    Last edited: Jan 28, 2021
  17. Jan 30, 2021 at 5:11 AM
    #17
    General Motors

    General Motors [OP] New Member

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    Thank for info just ordered replacement
     
    Clemsonman14 likes this.
  18. Jan 30, 2021 at 5:29 AM
    #18
    FUSE86

    FUSE86 New Member

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    +1 same experience & remedy
     
  19. Jan 30, 2021 at 5:30 AM
    #19
    FUSE86

    FUSE86 New Member

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    Was just about to comment that our 21' sequioa doesn't have this whistle. This makes sense, good to know.
     
    Clemsonman14 likes this.
  20. Feb 17, 2021 at 2:31 PM
    #20
    General Motors

    General Motors [OP] New Member

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    Removed throttle body screen gasket and replaced with Sequioa gasket . Noise is all gone !!!!
     
    Clemsonman14 likes this.
  21. Feb 17, 2021 at 2:49 PM
    #21
    Terndrerrr

    Terndrerrr it's good to get lost once in a while

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    Woah. My truck totally does this. I've read a lot about this issue, but never realized mine does it until you mentioned it's like a dog whistle.
     
  22. Feb 17, 2021 at 3:07 PM
    #22
    2010bigdog

    2010bigdog New Member

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    mine does it too. how do you replace it ?
     
  23. Feb 17, 2021 at 3:14 PM
    #23
    Clemsonman14

    Clemsonman14 New Member

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  24. Feb 18, 2021 at 5:57 AM
    #24
    General Motors

    General Motors [OP] New Member

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    Tools required a 10 mm socket .Time 15 minutes
     
    I_Am_Thee_Walrus likes this.
  25. Feb 18, 2021 at 8:55 AM
    #25
    I_Am_Thee_Walrus

    I_Am_Thee_Walrus New Member

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    My ‘18 Taco had the A/C whistle and it drove me nuts. Didn’t notice the whistle on the tundra until I was on my way home from buying it a month ago. Instantly felt upset. Read about the fix on here and just remembered to order the new gasket :thumbsup: Excited to get it in. ;)
     
  26. Feb 18, 2021 at 3:47 PM
    #26
    2010bigdog

    2010bigdog New Member

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    Thanks!
     
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  27. Feb 18, 2021 at 4:07 PM
    #27
    Sitting Sideways

    Sitting Sideways Probably stuck somewhere

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    I have it on my 2021. Replacing the throttle body gasket did nothing to stop it unfortunately
     
  28. Feb 18, 2021 at 4:09 PM
    #28
    Sitting Sideways

    Sitting Sideways Probably stuck somewhere

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    I have a 2021 Tundra and after replacing the screen it still whines. Super annoying. Just like people are describing it comes and goes with throttle input
     
  29. Feb 18, 2021 at 7:52 PM
    #29
    Bronzeback

    Bronzeback New Member

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    If it’s a whine, the gasket doesn’t help. If it’s a barely audible annoying high pitched whistle, that’s the high flow air filter combined with the mesh screen.
     
  30. Feb 18, 2021 at 8:23 PM
    #30
    TundraPJ

    TundraPJ New Member

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    I snipped my screen a year ago - which eliminated 99% of my whistle. Just ordered the sequoia gasket. Not expecting a difference, but I’ll feel better about it being an OEM fix...
     

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