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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. Jan 29, 2019 at 5:38 PM
    #5021
    NJTaco08088

    NJTaco08088 Well-Known Member

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    No. I bought the truck in April 2017. Brought it back with just 400 miles on it. They said the rear diff had metal shavings and replaced it. The new diff had the whine but not nearly as loud. They told me it's normal. We rode 2 other tacomas on the lot that make the noise. I drove a friends Tacoma that made the noise but it was so quiet only I could hear it because now my ears are trained to hear that damm noise.
     
  2. Jan 29, 2019 at 6:17 PM
    #5022
    trazerr

    trazerr Well-Known Member

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    The dealer is wanting the FTS to drive other new Tacoma’s from their lot and compare to mine. I am going to try to do it with him. I know we can find some quiet new ones. However, I know they’ll say that some take a few miles to howl. And that will be that. No winning when they say any howl scenario is normal lol
     
  3. Feb 10, 2019 at 9:43 AM
    #5023
    farmerbob

    farmerbob Active Member

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    It seems that each differential has a unique 'personality'. Not good.
     
  4. Feb 16, 2019 at 1:10 PM
    #5024
    NMTrailRider

    NMTrailRider Well-Known Member

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    Are you still quiet?
     
  5. Feb 16, 2019 at 3:00 PM
    #5025
    The Real Moondog

    The Real Moondog Well-Known Member

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    So far so good.
     
    NMTrailRider and shakerhood like this.
  6. Feb 20, 2019 at 6:25 PM
    #5026
    Abjamison

    Abjamison Active Member

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    Turns out my howl is also tied to temp. When it's really cold out the noise disappears, soon as it warms up it comes right back. I bought the truck in Dec so that explains why it didn't show up for several months after owning it.
     
    rubiconjp and Grossomotto like this.
  7. Feb 21, 2019 at 5:13 AM
    #5027
    NJTaco08088

    NJTaco08088 Well-Known Member

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    I wonder if it's due to the rear diff oil being thicker in cold temperatures. Why would less noise be transmitted when its cold?
    My truck is perfectly quiet below 40- 45 degrees.
     
  8. Feb 21, 2019 at 6:00 AM
    #5028
    fdbyrne

    fdbyrne Well-Known Member

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    Doubtful. Even thicker 85w-140 oil makes no difference to the sound. No change at all.
     
  9. Feb 21, 2019 at 7:21 AM
    #5029
    trazerr

    trazerr Well-Known Member

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    I am part of the group where the colder it gets the quieter it gets. I don’t want winter to end! Ha
     
    shakerhood likes this.
  10. Feb 24, 2019 at 8:47 AM
    #5030
    TacosAreLife

    TacosAreLife New Member

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    Why mask the problem when it shouldn't be one people???

    Anyhow, I don't think Toyota wants to fix this issue or has engineers bright enough to understand the issue.. I owned 2 2019's at this point. Bought an sr5 4x4 double cab short bed from the dealer with 9 miles on it and within a week noticed a driveline wobble when slowing down from 25-15mph. Right then i knew something with driveshaft wasn't right..i went back instantly and brought my concerns up to the sales guys, and naturally they didn't give 2 fu*ks.. So i lost it on the entire place. They settled on getting me into a trd sport 4x4 double cab short bed with upgraded options for 2k more.. Ok no problem, i test drove that truck and it was fine, no wobble,or noises in the drive train with 45 miles on it..
    Well What do you know 187 miles on the odometer and there is a whine noise from the rear when decelerating from 60-50 mph and the wobble at 25-15 mph appeared. Took it in and they blamed the factory running boards that came installed factory (lmao) wind noise and the vinyl bed cover for the rear noise... Jokers right? (Or lazy incompetent mechanics). Anyway I'm 2 receipts short of a lemon law claim since these jokers don't want to resolve the problem.. Let's see where this goes..
    I was gonna do the whole shim speal and even the 3 degree pinion shims on my own since I am a fabricator and mechanic (currently built a 68 c10 with a 2jz) to see if this resolves the issue, but let's face it, i just spent 38k on a brand new truck, why that fu*k am i touching it? Ok rant over, thanks for anyone that read this entire post.
     
    rubiconjp and fdbyrne like this.
  11. Feb 24, 2019 at 8:48 AM
    #5031
    shakerhood

    shakerhood Well-Known Member

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    That's weird, mine is a little louder in the cold, also when going downhill.
     
    trazerr likes this.
  12. Feb 24, 2019 at 9:03 AM
    #5032
    bulalo

    bulalo Well-Known Member

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    Wow two strikes for you. Mine has it but was fixed by the tsb. Can’t tell if it returned because shortly after the tsb I upgraded my tires to duratrac . Looks and drives great. Howling won’t be a concern anymore due to tire noise :p. At least I’m enjoying my truck and not stressed out anymore. It looks good that I sometimes have to do a double look walking away on the parking lot lol.
     
  13. Feb 24, 2019 at 9:08 AM
    #5033
    TacosAreLife

    TacosAreLife New Member

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    @bulalo
    You have the long bed, are you double cab as well? Trying to see if the driveline is the same. Also which tsb was it fixed under and what did it entail?
     
  14. Feb 24, 2019 at 9:12 AM
    #5034
    bulalo

    bulalo Well-Known Member

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    Yup DCLB 4wd trd off road. The tsb for the drive live vibration fixed it. They just replaced the body mount and applied some dampeners. I was one of those who had it done early in the tsb.
     
    pfly12 and TacosAreLife like this.
  15. Feb 24, 2019 at 11:52 AM
    #5035
    trazerr

    trazerr Well-Known Member

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    Mine definitely is louder off throttle when going down hill. But this winter it is much much quieter. That happened once the temps dropped into the 20-40 range. Only thing changed is the temperature so I assume that was the cause ha a couple more months and I’ll know for sure if it was temp related or not.
     
    shakerhood likes this.
  16. Feb 26, 2019 at 7:39 AM
    #5036
    Handoverfist

    Handoverfist Well-Known Member

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    My rear diff noise was noticeable during the summer as well. The temperature did not have much of an affect on it as I can recall.
     
  17. Mar 2, 2019 at 2:24 PM
    #5037
    The_vue's

    The_vue's Well-Known Member

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    Is there a TSB for the 4wd system? When in 2wd it's fine but once in 4wd I can here a howl up front like from the front transfer case. This happens at 25mph. I switch back to 2wd thens its gone
     
  18. Mar 9, 2019 at 9:01 PM
    #5038
    rubiconjp

    rubiconjp Well-Known Member

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    Darn it, bought mine in Jan 19th and was thinking I was one of the lucky ones.. recently as temperature started warming up, at the same time as I changed rear diff oil (SuperTech 75w90 full synthetic) it started howling between 45-55 mph, usually off or light throttle. Was thinking it's the SuperTech oil but after reading this thread, maybe temperature related? Argh!
     
  19. Mar 9, 2019 at 11:29 PM
    #5039
    trazerr

    trazerr Well-Known Member

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    For me I think it is directly related to temps. Its been 20-40's for the past few months here and my howl is much more quiet. It is supposed to warm up the week after the next so I am sure it will be back in full force.
     
  20. Mar 9, 2019 at 11:55 PM
    #5040
    NMTrailRider

    NMTrailRider Well-Known Member

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    I might suggest it's peripherally related to temps, not directly.
     

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