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Bearing noise at slack throttle at highwat speeds

Discussion in '2nd Gen. Tacomas (2005-2015)' started by skytower, Jan 22, 2013.

  1. Jan 22, 2013 at 2:12 PM
    #1
    skytower

    skytower [OP] Well-Known Member

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    Hitch and wiring, aux back-up light, rear strobe lights, radio and underseat sub.
    (highway speeds)Going 60mph on a level road, I get a grumble. Not at accel nor at decel, slack throttle, it happens. It's almost like the noise you get when threading a large nut down a threaded rod, or holding a Timken bearing by the inner race and spinning the cage. The location of the noise is very difficult to pinpoint:(
    New ujoints, front wheel bearings, 103k miles, one piece driveshaft.

    Any ideas?
     
    Last edited: Apr 24, 2013
  2. Jan 29, 2013 at 7:19 AM
    #2
    skytower

    skytower [OP] Well-Known Member

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    Hitch and wiring, aux back-up light, rear strobe lights, radio and underseat sub.
    Anyone? Bueller?
     
  3. Apr 24, 2013 at 7:12 AM
    #3
    skytower

    skytower [OP] Well-Known Member

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    Hitch and wiring, aux back-up light, rear strobe lights, radio and underseat sub.
    Still looking. Noise is getting worse:(
     
  4. Apr 24, 2013 at 4:27 PM
    #4
    skytower

    skytower [OP] Well-Known Member

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    Hitch and wiring, aux back-up light, rear strobe lights, radio and underseat sub.
    Well... Road speed makes a difference with the speed and intensity of the noise. There is no difference with engine speed, nor with gear selection.
    There were no shavings in the diff, xfer case, nor trans lube. I suspect from the trans output to the rear of the drivetrain, but I would like to hear from someone else before I start tearing into anything.
    I have till middle of May to get it fixed...
     
  5. Apr 24, 2013 at 5:11 PM
    #5
    92dlxman

    92dlxman drinking whats on sale

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    honestly, no idea, but maybe its gear chatter somewhere as at "slack" throttle its likely switching from loaded, to reverse loaded very quickly?

    check driveline lash at the rear end? im digging deep on this lol
     
  6. Apr 24, 2013 at 5:37 PM
    #6
    Jetman1979

    Jetman1979 Well-Known Member

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    Look at your carrier bearing in the middle of your drive shafts.
     
  7. Apr 24, 2013 at 5:41 PM
    #7
    Ghost848

    Ghost848 Well-Known Member

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    One peice drive shaft.

    If it was bearings it would be more of a wirring noise to it. Diff has more of a worrr noise... In my experience.
     
  8. Apr 24, 2013 at 6:17 PM
    #8
    Jetman1979

    Jetman1979 Well-Known Member

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    My bad I reread and saw 1 piece shaft
     
  9. Apr 24, 2013 at 6:20 PM
    #9
    Jetman1979

    Jetman1979 Well-Known Member

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    Have you done anything to the rearend. Possible axle bearings or the 3rd member? Can you get the truck in the air safley and run it maybe on a lift or something?
     
    Last edited: Apr 24, 2013
  10. Apr 25, 2013 at 11:51 AM
    #10
    skytower

    skytower [OP] Well-Known Member

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    Hitch and wiring, aux back-up light, rear strobe lights, radio and underseat sub.
    20 mph on jack stands made no obvious noises via stethoscope.
    Only mod is the lift. New ujoints, no abormal slop in drivetrain.
    No shavings in any gear lubes.
    I'm going to hunt for TSBs and look to see if there are any sealed bearings in the trans and xfer case. It has to be something from the output shaft of the trans on back, since it's road speed related.:notsure:
     
  11. Apr 25, 2013 at 2:03 PM
    #11
    skytower

    skytower [OP] Well-Known Member

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    Hitch and wiring, aux back-up light, rear strobe lights, radio and underseat sub.
    Dealer wants $120 to take a look at it...FML.
     
  12. Apr 25, 2013 at 2:13 PM
    #12
    Pugga

    Pugga Pasti-Dip Free Since 1983

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    How recently did you change your wheel bearings? One could have been bad or damaged during the install and worn out prematurely. Have you checked any of the wheels for play or check the tranny output shaft for play for that matter?
     
  13. Apr 25, 2013 at 2:20 PM
    #13
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

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    Dave...

    I had this same symptom above 70mph on the way home last weekend from gulches while running my 1 piece driveshaft spare.

    Haven't had it up to that speed since then, but will keep you posted (please do the same for me). I also suspect rear drivetrain, particularly u-joint or slip yoke. Tq on all the bolts was good. Hoping when I torched the stock driveshaft I didn't cause a problem with the trans output.
     
  14. Apr 25, 2013 at 2:30 PM
    #14
    650H1

    650H1 Well-Known Member

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    its the driveshaft... they arent long enough on the reg cabs. its not a big deal, nothing is "wrong" per say, but if you flip your driveshaft around, it will eliminate the noise. thats what i did with my reg cab, and it was fine. a better fix would be to have your driveshaft lengthened. fwiw...
     
    Last edited: Apr 25, 2013
  15. Apr 25, 2013 at 2:34 PM
    #15
    Blueitrgsr

    Blueitrgsr Well-Known Member

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    Seems like most reg cabs do it. Flipping the driveshaft around usually helps. Mines done it since the day I bought the truck.
     
  16. Apr 25, 2013 at 3:01 PM
    #16
    skytower

    skytower [OP] Well-Known Member

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    Worth a try... In progress shortly, will post details.
     
  17. Apr 25, 2013 at 3:34 PM
    #17
    650H1

    650H1 Well-Known Member

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    worth a try? that the fix. its not u-joints, or a carrier bearing. its your driveshaft. it needs to be lengthened. either spend the $150 to get it lengthened, or flip it for free. either way, there is nothing wrong with your truck, and nothing is broken.
     
  18. Apr 25, 2013 at 4:29 PM
    #18
    Pugga

    Pugga Pasti-Dip Free Since 1983

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    Out of curiosity, how does flipping the shaft solve the problem?

    I believe OME sells a drive shaft spacer. If length is the issue, that could be another solution.
     
  19. Apr 25, 2013 at 7:01 PM
    #19
    skytower

    skytower [OP] Well-Known Member

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    Hitch and wiring, aux back-up light, rear strobe lights, radio and underseat sub.
    Flipping it moved the noise to the rear of the truck, and it doesn't do it as long.
    Also, It no longer has a vibe at 60MPH anymore.
    So, no, it is still not fixed. I just need to get another driveshaft. Any recommendations on who to go through? I don't like spacers. They might be nice for a temp fix till I save for a new driveshaft though.
     
  20. Apr 25, 2013 at 7:52 PM
    #20
    skytower

    skytower [OP] Well-Known Member

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    Hitch and wiring, aux back-up light, rear strobe lights, radio and underseat sub.
    Reading up on the spacers, I see that they are a bad idea. More extreme shaft angle and a higher likelyhood of running out of slip joint travel=smashed xfer case. New shaft it is.
     
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