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Rear end problems...

Discussion in '2nd Gen. Tacomas (2005-2015)' started by pinchetaco, Oct 2, 2011.

  1. Oct 2, 2011 at 7:37 AM

    pinchetaco [OP] Well-Known Member

    Apr 6, 2009
    First Name:
    Winston Salem, NC
    06 Taco 6 inch ProComp Lift 35's
    6 inch ProComp Lift, 35x12.50x18 Red Letter Generals, ProComp Wheels, Debadged, Black Headlight mod, Dome Light Mod, Trailer Plug Relocated
    So I did a gear swap around 1000 miles or so, and now I am hearing a hum/vibration coming from the rear end. When your driving the hum/vibration gets louder as you increase speed. Now everything was fine after the gear swap no whine or vibe. When you put the truck in N when your at speed the problem is still there, so to me that rules out u-joints. I have looks at they u-joints and they seem fine. I have also looked at the wheel bearings and they seem to be good. So I am wondering if something is wrong with the spider gears or one of the bearings inside the diff. Has anyone had any experience with issues like this?
  2. Oct 2, 2011 at 8:00 AM
    Tacoma Mike

    Tacoma Mike 43 Year Toyota Master/ASE Master Tech.

    Aug 6, 2011
    First Name:
    Southern Maine
    2011 Double Cab V6
    Large Storage Box, 02610 intermittent switch swap, "Hot Wire" Power Outlets, DRL Shut Off, Disable Fob Beep, Disable Seat Belt Buzzers, Parking Light Mod, Battery Tender, 4 Leaf Spring Pack, Rear Headrest Removal, Custom Ultragauge Mount, Factory Tow Package (7 Pin) Rear Diff Mod, Taco Lean Mod
    A 1000 miles is not fine. Improper install can last that long. Assuming there were no issues in the axle area then it has to be one of several things in the pig.

    Improper carrier bearing preload.
    Improper pinion preload.
    Improper gear depth.
    improper backlash.

    Each item has it's own quirky noise.

    Give it a good ride;

    sway the truck going straight
    on and off the gas in third gear
    sweeping turn left and right.

    sway the truck in neut.

    Please do this safely.

    come on back and I'll try to get you in the right direction.

    I also need to know all the parts you replaced. be specific

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