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Rear end howl/whine at 60mph....WTF to do????

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Chiloquin_Car_Care, Mar 6, 2019.

?

drive with the howl/whine?

  1. hell no....thats annoying

    5 vote(s)
    26.3%
  2. hell no....thats dangerous

    6 vote(s)
    31.6%
  3. who cares....jjust turn up the tunes & drive

    8 vote(s)
    42.1%
  1. Mar 6, 2019 at 11:36 AM
    #1
    Chiloquin_Car_Care

    Chiloquin_Car_Care [OP] 100mph 'til 100 years old

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    I have a 2013 with 305k+ miles (4x4 DCLB)
    noticed a howl/whine at 60mph (also there at 50 & 70, but most notable at 60mph)
    when I let off throttle & when I set cruise control to 60mph

    I have noticed this noise for the last 5-10k miles
    but may have been there for many miles prior & I just didnt hear it
    as this howl is very faint & only at 50-70mph, most noticable at 60mph

    seems to be coming from rear end
    did a fair share of research/reading on this....
    most point to rear pinion bearing wear

    I did remove the entire carrier assembly 5k miles ago
    took it to a driveline shop
    shop stated there was nothing wrong with carrier assembly/3rd member
    all the teeth on pinion, ring, & spider gears looked great
    I did find metal flakes in the bottom of the diff housing while I had the 3rd member removed
    I am assuming these flakes are from the roller bearing(s) that are part of the pinion bearing that are failing/deteriorating

    Ive driven it 5k miles since I had the 3rd member/carrier assembly examined
    & the noise is still roughly the same (volume wise)

    my big question for TW peeps.....if a pinion bearing is early in failure, would a bench test of the 3rd member reveal this? or is it only diagnosable while driving?
    how long can you drive with a bad pinion bearing?
    when do you know you have gone to far with a bad pinion bearing?

    wondering how long I can keep driving with this noise before a major failure?
    debating whether to order a replacement 3rd member from ECGS?
    they want $725 (with my core) + I pay shipping one way (to return my 3rd)
    mines is 3.73 non locker
    local shop wanted $500 to overhaul
    Id opt to spend the extra money & go ECGS

    what to do? what to do?
     
  2. Mar 6, 2019 at 12:20 PM
    #2
    desertrunner24

    desertrunner24 Well-Known Member

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    Have you checked the wheel bearing to rule them out? It does sound like a pinion bearing from your description. Theres no way off telling how long it will last. It could fail in a matter of seconds or in a week or months. I would plan on calling up ecgs and getting one on the way if you can afford it.
     
    CanisLupus likes this.
  3. Mar 6, 2019 at 2:15 PM
    #3
    Chiloquin_Car_Care

    Chiloquin_Car_Care [OP] 100mph 'til 100 years old

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    I replaced all 4 wheel bearings
     
  4. Mar 6, 2019 at 3:06 PM
    #4
    nd4spdbh

    nd4spdbh Well-Known Member

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    how long did you run the from the factory rear diff oil? Im gonna bet you ran it for quite some time, or have gone long intervals between changes. If so, pinion bearings are gone, and have likely ate your ring and pinion.
     
    BillsSR5 likes this.
  5. Mar 6, 2019 at 3:11 PM
    #5
    hx989

    hx989 Church of @ODNAREM - Pacific Northwest Chapter

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    PNW
    @glorifiedwelder sells a whole rear axle w 3.73 with awesome factory LSD for much less. Maybe he would ship you the 3rd in a bucket?

    Could save you a lot of money and you upgrade to mechanical LSD
     
  6. Mar 6, 2019 at 3:20 PM
    #6
    dborrer

    dborrer Well-Known Member

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    2018 Frame, stock LCAs & Rear Leaf springs. SPC (LR) UCAs, Bilstein 5100s at 0 OME 883, HS 3 leaf progressive AAL, Bilstein 5100s, MESO custom (Red) LED dome, LED Ultimate Maps, Spyder Halo Projector w LEDs, Spyder LED tails
    Are you positive that the rear (one or both) wheel bearings are not bad?

    I have 222K miles and just after the frame replacement (last summer) both the front and rear bearings have had to be replaced. I had my truck inspected by a private shop prior to the Dealer frame replacement and identified the front bearings (actually only one side) was visibly loose. But i had both replaced. About a month or so after the frame replacement (and slight lift of the front end with my new coil/struts) the rear end started to "howell" the faster I drive. I didn't "feel" any significant vibration, but definitely could hear something.... and in fact it was the rear bearings... both are now replaced (stupid expensive!) My dealer did the job for me (since the rears are a pressed off/ on part and need the Special Service Tool to do it....) and now all sounds great!

    Your description [noticed a howl/whine at 60mph (also there at 50 & 70, but most notable at 60mph) when I let off throttle & when I set cruise control to 60mph] seems/ sounds to me just like what I was experiencing....

    Can you see any evidence of a seal failure on the back side of the wheel housing, looking from under the truck, looking at the back side of the wheel housing?
    I could on mine, on one side... slight evidence of oil leaking... had stained the back side of that housing...
     
  7. Mar 6, 2019 at 3:21 PM
    #7
    US Marine

    US Marine Semper Fi

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    A loud noise " howl" from the rear axle under decel "slowing down " is indicative of a worn pinion bearing or crush sleeve . A howling sound under acceleration is from worn out or improper preload of the pinion and ring gear
     
  8. Mar 6, 2019 at 3:21 PM
    #8
    glorifiedwelder

    glorifiedwelder IG= @Liquid_Torch

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    Thanks for the tag, but I actually sold the rear end last Sunday. I need to fix my for sale post. Thanks for reminding me
     
  9. Mar 6, 2019 at 3:26 PM
    #9
    US Marine

    US Marine Semper Fi

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    A simple test you can do to check your pinion bearing preload or crush sleeve

    Pull rear drive shaft off at rear axle

    Next with a large ratchet , extension and socket that fits the large nut holding the pinion yoke attempt to see if it's loose . If it is the crush sleeve on the pinion gear is worn
     
    floodedkiwi likes this.
  10. Mar 6, 2019 at 3:33 PM
    #10
    US Marine

    US Marine Semper Fi

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  11. Mar 6, 2019 at 3:42 PM
    #11
    Chiloquin_Car_Care

    Chiloquin_Car_Care [OP] 100mph 'til 100 years old

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    2013 DCLB 4x4
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    if you want details on my truck & its maint please see-
    https://www.tacomaworld.com/threads/toyota-tacoma-gen-2-write-up-300k-miles.591780/

    indeed you are correct
    I ran the factory rear end gear oil for 90k miles like an idiot!
    then I started synth gear oil every 15k after reaching 90k miles & have done so up to 305k miles

    although if you read my initial post in this thread, I did remove the 3rd member, & have it examined by a drive line shop
    all the teeth looked fine (ring, pinion & spider teeth all good)
     
  12. Mar 6, 2019 at 3:43 PM
    #12
    Chiloquin_Car_Care

    Chiloquin_Car_Care [OP] 100mph 'til 100 years old

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    thanks for this..I will check it out
     
  13. Mar 6, 2019 at 3:44 PM
    #13
    nd4spdbh

    nd4spdbh Well-Known Member

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    Yeah im still betting pinion bearings, you might of gotten lucky and caught it early before causing too much damage to both of em. If you are in there replacing pinion bearings, replace carrier as well.
     
  14. Mar 6, 2019 at 3:44 PM
    #14
    Chiloquin_Car_Care

    Chiloquin_Car_Care [OP] 100mph 'til 100 years old

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    wow kool....I will do this
    thanks for the advice
    much appreciated!
     
  15. Mar 6, 2019 at 3:49 PM
    #15
    Chiloquin_Car_Care

    Chiloquin_Car_Care [OP] 100mph 'til 100 years old

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    no leaks on mine buddy...
    I replaced all 4 wheel bearings anyways since hearing the noise, but it persist...so its not wheel bearings
    thanks for your input bud

    I replaced both rear wheel bearing for $400 total
    (the toyo bearings were $100 each on Amazon & local shop charged me $80 per side to press out bearings)
    I removed & reinstalled the rear wheel drive splines myself to save $
    minor PITA, but a great learning experience on the construction of the rear end & how to work on antique drum brake systems, lol
     
    dborrer likes this.
  16. Mar 6, 2019 at 3:51 PM
    #16
    Chiloquin_Car_Care

    Chiloquin_Car_Care [OP] 100mph 'til 100 years old

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    im going ECGS on this one...time for a rebuilt 3rd
     
  17. Mar 6, 2019 at 3:54 PM
    #17
    nd4spdbh

    nd4spdbh Well-Known Member

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    Makes it easy for ya!
     
  18. Mar 6, 2019 at 4:09 PM
    #18
    Chiloquin_Car_Care

    Chiloquin_Car_Care [OP] 100mph 'til 100 years old

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    thanks for this, but along with this article, Ive read every article available online regarding 'howling'
    Im pretty sure its my one of the pinion bearings or the preload on the pinion itself
    going to pull the trigger on ECGS rebuilt unit, unless someone provides different input on the matter here at TW
    hopefully a rebuilt 3rd fixes this annoying & possibly dangerous howl/whine...I like wine but not whine hahahhaha
     
  19. Mar 6, 2019 at 4:30 PM
    #19
    jessandjamie

    jessandjamie Well-Known Member

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    I have a 14 with 40K miles and had replaced the original fluid at roughly 1K with Mobile 1. I had the truck regard at the 40K and ZUK who did the gears showed me that my pinion bearing had some abnormal wear. Its possible its bad, and not your fault for running so long with that oil.
     
  20. Mar 6, 2019 at 5:05 PM
    #20
    Chiloquin_Car_Care

    Chiloquin_Car_Care [OP] 100mph 'til 100 years old

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    I just dont want to blow up my rear end....the sound is annoying & worrisome
    really wonder how long its been there with out me noticing
     

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