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Fixing bump steer after lift?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Ca Taco, Feb 29, 2012.

  1. Feb 29, 2012 at 9:55 PM
    #1
    Ca Taco

    Ca Taco [OP] Well-Known Member

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    El Cajon
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    I lifted my '12 Taco std. cab and put Kelly Safari TSR 265/75/r16 tires on and it looks great. Problem? Freeway bumps cause steering wheel motion (moderate feedback which was not there before the lift) and drift when hitting bumps/dips at high speed due to the now increased downward angle of the tie rods. I fixed this on my Ranger years ago by reaming out the top of the steering knuckle (with the proper tapered reamer) and flipping the tie rods over to the top side of the knuckle arms. Aside from doing what I did on my Ranger, does anyone have a better suggestion? The truck was rock solid on the freeway prior to the lift/tires mods. I know it has variable power steering which is supposed to tighten up the ride at high speeds, but the way it is now, if it was a steering box type steering instead of a rack, I'd add an aftermarket steering damper shock. Any ideas?
     
  2. Feb 29, 2012 at 10:19 PM
    #2
    BAMFTACO

    BAMFTACO Pabst Blue Ribbon on ice

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    Lift- king 2.5 with light racing uppers,tc coil bucket gusset, timbern bumps ,defined extended shackles with shackle brace. Armor- tire gate, custom tube bumper, kr fab rear bumper,trail gear wiy 78 in sliders Performance-intake manifold spacer, vibrant resonator as muffler, hps silicone hoses Random stuff- kenwood head unit,b&m t shifter, hood bug deflector, rear dust lights with custom bed bar and hi lift mount.
    How big of a lift do you have
     
  3. Feb 29, 2012 at 10:29 PM
    #3
    sfcadams

    sfcadams Retired Senior NCO

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  4. Mar 1, 2012 at 7:59 AM
    #4
    Ca Taco

    Ca Taco [OP] Well-Known Member

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    I did air the tires to max trying to squeeze out a bit of fuel economy. I suspect that whippersnapper is right and I should air down. I installed a 2.75" leveling kit and had alignment done. Right now it follows the lines in the concrete at high speeds, and veers slightly when hitting a bump on one side or the other.
     
  5. Mar 1, 2012 at 9:45 AM
    #5
    skytower

    skytower Well-Known Member

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    Hitch and wiring, aux back-up light, rear strobe lights, radio and underseat sub.
    Mine has always tried to follow the concrete joints with Firestone A/T's. It has more to do with tire tread configuration than if you have a lift or not.
    I have a proper alignment with a 3.5"f 4.5"r lift and the steering is no different than before the lift.
    All I need is a degree shim to get rid of these vibes:(
     
  6. Mar 1, 2012 at 9:48 AM
    #6
    tacomalex

    tacomalex Well-Known Member

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    Did you install new UCA's with the lift? My steering was crap with the almost 3 inch lift I had before I installed my Light Racing UCA's. Those helped a lot with wandering at highway speeds and really stiffened up my steering wheel.
     
  7. Mar 1, 2012 at 9:51 AM
    #7
    hotrod45

    hotrod45 Well-Known Member

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    remove the lift kit. then take it to the dealer if it continues and ask them to fix it under warrantee
     
  8. Mar 1, 2012 at 10:12 AM
    #8
    skytower

    skytower Well-Known Member

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    Hitch and wiring, aux back-up light, rear strobe lights, radio and underseat sub.
    Mine does. It absoutely goes apeshit when I cross metal bridge grating. Can you say squirrly. Never did it with the stock tires. I will be switching to General Grabber AT2's eventually.
     
  9. Mar 1, 2012 at 10:54 AM
    #9
    MonkeyChief

    MonkeyChief Mr. Magoo

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    In the desert, by the beach, under the mountains
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    my next mod. I lifted only 2" and the wander isn't bad, but I'm planning some longer trips with it, so I'll want to tighten it up for sure.

    OP, I don't know if you have a problem, it sounds like more a need for fine tuning maybe. Good luck and let us know what happens. I have heard anytime you lift these trucks beyond 2.5" you need UCA for alignment, with steering also being improved.
     
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