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3rd Gen Poll: Rear End Noise howling when feathering throttle

Discussion in '3rd Gen. Tacomas (2016+)' started by smitty99, Jul 21, 2016.

?

Does your rear end make a slight howling noise at 50-65mph when feathering throttle?

  1. Yes

  2. No

  3. Have not checked it yet but will report back

Results are only viewable after voting.
  1. Apr 25, 2019 at 7:39 PM
    #5081
    ajmogen

    ajmogen Well-Known Member

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    I've always thought that breather might be the cause
     
    Grossomotto likes this.
  2. Apr 25, 2019 at 7:51 PM
    #5082
    Burro09

    Burro09 Well-Known Member

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    Did you have the tsb performed? Im terrified they might screw something else
     
  3. Apr 25, 2019 at 7:53 PM
    #5083
    ajmogen

    ajmogen Well-Known Member

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    Hell no
    The dealer doesn't touch my truck
     
    Burro09 likes this.
  4. Apr 25, 2019 at 8:27 PM
    #5084
    trazerr

    trazerr Well-Known Member

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    Let us know when you try step two. My howl is coming back with the warmer temps unfortunately. Would love to hear another positive result, but I’m not holding my breath ha
     
    The Real Moondog and nDub like this.
  5. May 4, 2019 at 6:20 PM
    #5085
    CygnusX191

    CygnusX191 Rogue 2

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    Hood scoop delete, RCI rear bumper, RCI sliders, OR wheel swap, RCI sticker, K&N Oiled Air Filter, TRD Farkle
    TRD Sport, M/T AC July 2018

    Just started noticing the howl this weekend at 11666 miles (I know, right?)

    Not really a 'howl' per say, more like a persistent whine. 57ish mph, feathering throttle. Noticed it in 4th 5th and 6th gears
     
  6. May 14, 2019 at 12:51 PM
    #5086
    dung

    dung Well-Known Member

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    I just got done riding around with a rep from Toyota. They have agreed to replace my differential as a good will gesture even though the truck may end up worse than before. We drove in three trucks today that all had some level of differential whine, however all were less obtrusive than mine and none of them had the low speed whine mine has. They are also going to fix my floppy hood. Hopefully I will end up with a better diff than before.

    None of the trucks were perfect, but the speed the whine kicked in was either lower or higher than mine and at speeds you don't constantly run at.
     
  7. May 14, 2019 at 6:52 PM
    #5087
    T.T.T

    T.T.T Well-Known Member

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    Best of luck to you with your truck.
     
    dung and CygnusX191 like this.
  8. May 15, 2019 at 9:11 AM
    #5088
    Mugsy7

    Mugsy7 Well-Known Member

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    The howl is finally gone!!! The TSB only reduced it. This knocked it out completely...NEW TIRES!

    Hasta la vista GY kevlar. Hello General Grabber AT2s.

    Actually, i think the tire noise is drowning out the howl. Not that these tires are all that loud. Least not as loud as KO2s imo.
     
    CygnusX191 likes this.
  9. May 15, 2019 at 9:31 AM
    #5089
    CygnusX191

    CygnusX191 Rogue 2

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    Hood scoop delete, RCI rear bumper, RCI sliders, OR wheel swap, RCI sticker, K&N Oiled Air Filter, TRD Farkle
    I've still got the stock GY OR tires. Maybe my luck will change when I upgrade...
     
  10. May 15, 2019 at 10:08 AM
    #5090
    T.T.T

    T.T.T Well-Known Member

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    Shoot slap on some noisier tires and an exhaust thats just a little louder than stock... like an axle back...
     
    CygnusX191 likes this.
  11. May 15, 2019 at 10:41 AM
    #5091
    CygnusX191

    CygnusX191 Rogue 2

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    Hood scoop delete, RCI rear bumper, RCI sliders, OR wheel swap, RCI sticker, K&N Oiled Air Filter, TRD Farkle
    :rofl:
     
    T.T.T likes this.
  12. May 15, 2019 at 2:59 PM
    #5092
    TD90S

    TD90S Cool as a cucumber in a bowl of hot sauce

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    Same.
    General Grabber in 265 70 17 and they are just slightly louder then the Stock GY tires. Can’t hear the slight whine.
    I really don’t think the tire noise is drowning out the noise, it’s not much louder. Possibly dampening the noise.?
    Not sure and really don’t care.....before or now.
     
    CygnusX191 likes this.
  13. May 22, 2019 at 10:27 AM
    #5093
    TriniPhantom

    TriniPhantom Well-Known Member

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    Door sill decals, Tailgate inserts, Mudflaps, Tri-fold Tonneau
    So I have a 2018 TRDOR M/T. Took it in for the howl and the leaking diff. Master tech rode along and confirmed that he was hearing the howl. I also mentioned the TSB about the diff whine. They checked it and found that my VIN didn't fall within the range, so they said they have to talk to the Toyota representative. The toyota representative said that these diffs are noisy diffs and since it doesn't fall within the range they want the dealership to do some investigation. Dealer called me back today. They fixed the leak my tightening up the bolts. Wrt to the howling, they said they folded up the tray cover and that somewhat dampened the noise, reported back the Toyota team and the Toyota team said that the noise is normal. I replied by saying that if you fold up the tray cover there would be more wind noise so that's why it would dampen the howl. She said they have to follow what Toyota tells them so the next option would be for me to call Toyota and make a case.

    I've seen some posts here that say the 2018 model year is covered under the TSB, but the dealership/Toyota is telling me otherwise. Is there an updated TSB? Also people seem to be having mixed results with the TSB. Any thoughts on how I should proceed here?
     
    CygnusX191 likes this.
  14. Jun 19, 2019 at 10:51 AM
    #5094
    mikebur

    mikebur Member

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    I just left my car in shop yesterday. The technician noticed the noise immediately and they decided to change the rear differential.
    I will update once I get it back.
     
    NMTrailRider likes this.
  15. Jun 19, 2019 at 11:03 AM
    #5095
    Arries289

    Arries289 Yo!

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    I have the same config as yours. I had my local dealer apply TSB 0013-18 for the rear mounts only. The TSB has multiple levels of 'fix'. So, basically, they just installed improved isolators on the rear cab mounts. That fixed my issue about 90%. I still hear a small amount of whine now coming from the front cab mounts which were not upgraded. So, in the interest of completing the job, I am going to inquire about getting the front mounts changed (I assume they are the same as the rear).
     
    CygnusX191 likes this.
  16. Jun 19, 2019 at 6:15 PM
    #5096
    NMTrailRider

    NMTrailRider Well-Known Member

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    I didn't realize the tsb covered both front and rear? I thought it was just the rear cab mounts.
     
    CygnusX191 likes this.
  17. Jun 20, 2019 at 5:25 AM
    #5097
    Arries289

    Arries289 Yo!

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    Sorry, I wasn't clear. It doesn't, but it should because noise is also transmitted from the front mounts.
     
    NMTrailRider likes this.
  18. Jun 23, 2019 at 10:20 AM
    #5098
    mikebur

    mikebur Member

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    Here is the update on my truck noise.
    For those who don't know, I have a 2019 TRD Offroad short-bed and it did not have any noise when I bought it.
    Around 2k miles it started to make howling noise around 54-57mph when going downhill and you could make the noise by feathering throttle while keeping the same speed. After driving another 1000 miles or so, speed range that you could hear the howling noise changed to 53-59 mph depending on if I am going uphill or downhill.
    My driving style had been non aggressive and I barely used 4wd other than minimum recommendation by factory(10miles/month).
    There had been a lot of discussion in this thread about the noise source. Some debate that this is a "harmonics" or tires noise while other believe that the noise is actually coming from rear differential.
    In my opinion they all can be the source but rear differential issue may be the source when you find the same symptoms as I did in my truck.
    Anyways, after few months of hesitation I decided to take the truck to dealership and the technician noticed the noise immediately. To verify the test drive findings, they took the car in shop, lifted and drove in the air. They confirmed that noise is coming from rear differential.
    They replaced the rear differential. In the shop report the mentioned that they found larger than normal metal shavings/pieces on magnetic drain plug.
    Currently the noise is gone and I can say for sure that in my truck the noise source was rear differential.
    I will drive the truck and make sure that the noise won't come back. According to "the real moondog" with the same issue and rear differential replacement, after 2k miles on his second differential the noise came back.
    I will update after I drive 2k miles!
     
    NMTrailRider likes this.
  19. Jun 23, 2019 at 10:22 AM
    #5099
    mikebur

    mikebur Member

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    Do you have any update?
     
  20. Jun 23, 2019 at 5:42 PM
    #5100
    The Real Moondog

    The Real Moondog Well-Known Member

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    I am in the middle of the LL process. I’m about to invoke arbitration. I may or may not go through with it and might just sell it.
     
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