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  1. #1
    Join Date
    May 2009
    Location
    Morehead City, NC
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    77
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    Default Power steering jerking back and forth violently

    What would cause a power steering box to jerk back and forth? I have a sbc with a stock type power steering pump. I also have hydro boost brakes. I'm pretty sure I have plumbed it correctly. I had just started a fresh engine and had the front wheels off the floor and was going to turn the steering wheel back and forth, and as soon as I touched the wheel, it jerked back and forth very violently. I've never seen or heard of this. Can anybody tell me what is wrong? thanks



  2. #2
    Join Date
    Jul 2006
    Location
    Pensacola, FL
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    725
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    I had this exact same thing happen to me on my ford rack & pinion. I swore I had it plumbed right, but it was backwards. I switched the lines, all was fine. Scott

  3. #3
    Join Date
    Dec 2004
    Location
    Morehead City, NC
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    923
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    Quote Originally Posted by surnufz View Post
    What would cause a power steering box to jerk back and forth? I have a sbc with a stock type power steering pump. I also have hydro boost brakes. I'm pretty sure I have plumbed it correctly. I had just started a fresh engine and had the front wheels off the floor and was going to turn the steering wheel back and forth, and as soon as I touched the wheel, it jerked back and forth very violently. I've never seen or heard of this. Can anybody tell me what is wrong? thanks
    By the way, he surnuf had it plumbed backwards. He switched the hoses and all is good now.

  4. #4
    Join Date
    Jun 2001
    Location
    Winter Springs, FL
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    9,962
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    Quote Originally Posted by Mike
    He switched the hoses
    Correct plumbing will cure a lot of things, lol.
    John Parsons



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  5. #5
    Join Date
    Apr 2001
    Location
    Central CA USA
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    5,524
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    That happened to Matt on a DSE rack, it damaged the rack.
    67 Camaro RS that will be faster than anything Mary owns.

  6. #6
    Join Date
    Jan 2009
    Posts
    578

    Default

    Quote Originally Posted by David Pozzi View Post
    That happened to Matt on a DSE rack, it damaged the rack.
    Yes, I've heard of different things happening, but in my particular case the wheel spun violently to the right and then bounced off the bump stop. We put it on a lift and when I spun the wheel quickly to the right it felt like the gears were slipping, because it felt "notchy." You could see that front wheels didn't turn in a smooth fluid motion with quick steering inputs.

    Moral of the story, make sure to check steering on and off a lift. We didn't realize the rack was broken for a couple of months afterward.

    Matt



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