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Power steering issue with plow on

Discussion in 'Ford Trucks' started by gkaneii, Nov 10, 2011.

  1. gkaneii

    gkaneii Junior Member
    Messages: 9

    I have a 99 F350 with 7.3 and I am have power steering problems when not under power. I have found out they they are notorius for lack of vaccum. Does anyone have a fix for this issue?
  2. damian

    damian Senior Member
    Messages: 330

    nothing to do with vacuum,try filling the tires to the max,the ps pumps are barely able to keep up without the plow on,i have added to the relief spring to boost pressure.
  3. Pinky Demon

    Pinky Demon PlowSite.com Addict
    from Ohio
    Messages: 1,121

    Yup, 7.3Ls are notorious for lack of vacuum. In fact, all diesels are notorious for lack of vacuum seeing as they don't make any in the first place.

    If anything, the weight of the engine and plow is making it hard to turn. Try inflating the front tires up higher, like around 70 psi. Check your power steering fluid. Is it low? Is the pump constantly whining? You could have a bad pump, or an overfilled pump.

    Try revving the engine slightly to get the serp belt moving. The brakes and PS are fed off a pump on the front of the engine. It's a hydro boost setup.

    What type of plow are you running, and how old / how many miles on your truck?