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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)
    25.0%
  2. hell no....thats dangerous

    7 vote(s)
    35.0%
  3. who cares....jjust turn up the tunes & drive

    8 vote(s)
    40.0%
  1. Mar 15, 2019 at 10:00 AM
    #81
    Chiloquin_Car_Care

    Chiloquin_Car_Care [OP] 100mph 'til 100 years old

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    pulled the trigger on the ECGS 3rd a few moments ago.....THREE WEEKS to get it!!!!!
    (they have approx 50 orders ahead of mine)
    I guess I will reinstall driveshaft & squeeze a few more miles out of the howler
    I cant live without my taco for 3 weeks
     
    revtune, Larzzzz and US Marine like this.
  2. Mar 16, 2019 at 5:27 PM
    #82
    Larzzzz

    Larzzzz Grande' Ricardo

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    Aux back up lights, Bed lights, Re-located trailer plug, Good dooby, a.k.a. jumper cable mod, Heated seats, back up camera,
    So, i put the rear axle on Jack stands, and let it idle in drive. I listened to the diff right behind where the ds connects, both wheel bearings and several places around the 3rd. I didn't hear anything of concern.
    The carrier bearing has a fair amount of slop, but haven't scoped it to listen to it. I was doing this alone and really didn't feel comfortable being completely under the truck without anybody in the cab.
     
  3. Mar 16, 2019 at 8:29 PM
    #83
    revtune

    revtune Dreaming of a 4.7 Tacoma

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    Man, congratulations on getting 300k out of the original. Did you order a diff with a traction device or open.

     
  4. Mar 17, 2019 at 6:26 AM
    #84
    Chiloquin_Car_Care

    Chiloquin_Car_Care [OP] 100mph 'til 100 years old

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    thanks....Im stilling running the original front shocks & rear brakes too.....crazy huh?
    both are due for replacement, but still have a few miles left in em
    I want to deal with this howling before I jump into front shocks
    plan to replace the rear brakes when swapping out my original 3rd with the ECGS rebuilt unit

    I ordered the rebuilt with an open diff....same as my original
    I did request the solid pinion spacer instead of the crush spacer
     
    revtune likes this.
  5. Mar 17, 2019 at 7:41 AM
    #85
    Chiloquin_Car_Care

    Chiloquin_Car_Care [OP] 100mph 'til 100 years old

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    when I tested mine, I did it with the truck turned off....removed the driveshaft connection at the rear diff, jacked the rear up & turned the rear wheels by hand (my daughter) & scoped the diff only (I already recently changed both rear wheel bearing, so I know those are good)

    I listened at both carriers bearings (that are inside the rear diff) & the pinion bearings at the head of the 3rd member (aka rear diff)
    I found a substantial amount of rumbling at the pinion bearing area verses other parts of the diff/rear axle

    I would recommend isolating drive train components, then scoping.....those dang sounds/rumbles can transfer easily & confuse the F out of one
    I learned this the hard way...hence replacing all my wheel bearing for no reason
    (front wheel bearings got replaced with the front diff needle bearing swap out a few months back....I thought I had a bad front wheel bearing, so I replaced it only to find the rumble I was hearing was coming form the front diff specifically the piece-o-crap needle carrier bearing)

    when you state 'carrier bearing' I assume you are referring to the rear driveshaft center support bearing (donut)...is that correct?
    if so, I looked at mine as well....it has a lot of slop....wondering if this could be an issue or maybe normal? cause strange harmonics?

    anyone have suggestions on testing the 'donut' (rear driveshift center support bearing)?
    what is normal amount of play/slop in the donut?
    maybe someone with a newer/lower mileage taco can get under their rig & check how sloppy theirs is & report back?
     
  6. Mar 17, 2019 at 8:17 AM
    #86
    Larzzzz

    Larzzzz Grande' Ricardo

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    Aux back up lights, Bed lights, Re-located trailer plug, Good dooby, a.k.a. jumper cable mod, Heated seats, back up camera,
    Changed the front axles, wheel bearings, ecgs bushing already. Figured at 300k it was time to do it anyways.
    Yes, I've been calling the center support bearing on the ds the carrier bearing. I also noticed some mechanical play i believe to be in the slip joint behind the middle u joint.
    I've got to change the oil and a sway bar link shortly. After I'm done with that, I'll go back to trying to remove the ds.
    This would be much easier on a lift. Lol
     
    revtune likes this.
  7. Mar 17, 2019 at 8:24 AM
    #87
    Chiloquin_Car_Care

    Chiloquin_Car_Care [OP] 100mph 'til 100 years old

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    hell ya on the lift buddy....in my perfect world, one day I will have a big ass garage just for tooling (like 30x30)
    & an auto lift for these moments in life
    I dont mind working on my taco, but I hate laying on the cold garage floor, ready for the warm months right about now
     
  8. Mar 17, 2019 at 9:08 AM
    #88
    Chiloquin_Car_Care

    Chiloquin_Car_Care [OP] 100mph 'til 100 years old

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    a BIG thank you to US Marine for his help/guidance.....cheers!
     
    US Marine and Larzzzz like this.
  9. Mar 17, 2019 at 9:20 AM
    #89
    Chiloquin_Car_Care

    Chiloquin_Car_Care [OP] 100mph 'til 100 years old

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    sorry about the typo on the title...I just fixed that...lol
     
  10. Mar 17, 2019 at 12:41 PM
    #90
    Larzzzz

    Larzzzz Grande' Ricardo

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    Aux back up lights, Bed lights, Re-located trailer plug, Good dooby, a.k.a. jumper cable mod, Heated seats, back up camera,
    Taking it out for a drive as I voice to text. I still have the drone after taking the drive shaft out. I am not happy about this.

    Feels weird driving it without the rear wheels pushing it along and there's a bit of torque steer as well that I am not used to.
     
  11. Mar 17, 2019 at 12:58 PM
    #91
    Chiloquin_Car_Care

    Chiloquin_Car_Care [OP] 100mph 'til 100 years old

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    yeah, when I did the remove rear driveshaft & 4hi test, it felt so strange being pulled not pushed & I def felt the steering & engine power interacting (torque steer)

    can you describe the 'drone' you are experiencing in more detail?
    maybe you should try the opposite test & remove the front drive shaft & road test for any change?
     
  12. Mar 17, 2019 at 1:56 PM
    #92
    Larzzzz

    Larzzzz Grande' Ricardo

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    Aux back up lights, Bed lights, Re-located trailer plug, Good dooby, a.k.a. jumper cable mod, Heated seats, back up camera,
    It's a sound that gets particularly loud around 60... It starts ramping up around 50, by 70 it's calmed down.
    It resonates the the whole cabin and for the life of me can't localize it to any specific area of the truck.
     
  13. Mar 17, 2019 at 2:18 PM
    #93
    Chiloquin_Car_Care

    Chiloquin_Car_Care [OP] 100mph 'til 100 years old

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    I am going to assume you clued into this thread due to the 50-70mph in the title
    because the 'noise' that I hear, it very faint & doesnt resonate at all(so faint most would not even notice it until pointed out)
    & causes no vibrations inside my cab
    furthermore it only occurs on decel between 50-70, most identifiable at 60mph though if demonstrating
    it is weird how the noise is not noticeable on decel at speeds above 70 though....
    maybe the howl is still there just too much engine/road noise at those speeds

    I think we have different issues, particularly because when I removed my driveshaft, the howl vanished
    & you had the opposite result...your noise persists with driveshaft removed
    at least you know its not your rear end

    have you checked your rear wheel bearings? have you replaced them or are they the original ones?
     
  14. Mar 17, 2019 at 2:58 PM
    #94
    Larzzzz

    Larzzzz Grande' Ricardo

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    Aux back up lights, Bed lights, Re-located trailer plug, Good dooby, a.k.a. jumper cable mod, Heated seats, back up camera,
    The bearings are original. I listened to them when I had it jacked up yesterday. I didn't hear anything that made me say, hmmmm.
    I'm not feeling any vibrations either that I could associate the 2 together.
    Used a little go pro knock off watching the center support bearing and went for a ride. Aside from is sagging it wasn't shaking or anything.
    Moot point though as pulling the drive shaft didn't change anything...
     
  15. Mar 17, 2019 at 5:50 PM
    #95
    Chiloquin_Car_Care

    Chiloquin_Car_Care [OP] 100mph 'til 100 years old

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    bummer on not isolating the issue on your end bud
    I cant wait to get my rebuilt 3rd & test
    I really want this annoying howl gone so I can get back to driving the crap out of my taco
     
    Larzzzz likes this.
  16. Mar 20, 2019 at 8:42 AM
    #96
    Cozza

    Cozza #almostnorm

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    Experiencing same issues at 160k miles. Regularly been changing the oil at 30k too :(
     
  17. Mar 20, 2019 at 1:18 PM
    #97
    Larzzzz

    Larzzzz Grande' Ricardo

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    Aux back up lights, Bed lights, Re-located trailer plug, Good dooby, a.k.a. jumper cable mod, Heated seats, back up camera,
    Yes it is.... Life goes on. I'll figure it out.
    Good luck with that third. Hope it solves your issue. :thumbsup:
     

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