Question about Ford F-350

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2004 f350 power steering problem. when the truck is in gear with your foot on the brake you cant turn the wheels. the power steering pump has been replaced and the fluid changed with no result.

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  • drywall pros Aug 15, 2008

    yes it is a 6.0 diesel engine. I understand what you are saying, but the brakes work fine. Could it still be a brake booster problem?

  • spanky349 Aug 20, 2008

    I have a 2002 F350 Supeduty. When I apply the brakes, I can't turn the steering wheel. I have replaced the pump and the box (twice each) and still have the problem. Can anyone out there help?

  • Anonymous Sep 05, 2008

    I have a 02 f-350 when the brake is applied ,the steering lock's. power steering pump has been replaced, 3 steering gear boxes, ball joints u-joints ect. truck has been at NTB & a FORD dealer for 2 months, the dealer has told me thats the way they are! I cannot believe ford does not have an anawer for this. any Suggestions?

  • drywall pros Sep 12, 2008

    well changed the brake booster with little or no result nice huh.

  • captdru Nov 26, 2008

    I have a 2001 Ford F 350 7.3 litre Diesel. When brake is applied power steering goes out and it is very hard to turn. Looking for solution.

  • budsservice Apr 02, 2009

    I HAVE A 2001 F250 7.3 LITER AND HAVE A PROBLEM WHEN THE BRAKES ARE APPLIED I CAN NOT TURN THE STEERING LEFT OR RIGHT "EVERY THING HAS BEEN CHANGED "

  • Denis Aube May 11, 2010

    Do you have a diesel engine in the truck?



    If so, because of the fact that the engine is turbocharged, and you have no vacuum in the intake, but instead turbo boost, the brake booster (behind the master cylinder on the firewall) is probably a "Hydrovac" type booster.



    If it is, it is run by the same circuit as your power steering (ie. Your power steering pump feeds fluid to the brake booster to supply "power brakes" to the truck).



    If this is the case, you might have a faulty brake booster assembly which robs the pressure available to your steering box when the brakes are applied.

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2006 f350 crew 4x4. Replaced p/s pump,booster,put gauges to check pressure? Fluid clean, lifted in air to check steering linkage and turning without load. Still baffled ! I work at a Ford dealer and mechanics said its normal. Thats BS! I replaced the p/s pump so im guessing the screen was new with the pump. I will check for the hell of it. I have a feeling it is suspension under load. The symptom on this truck is not turning when brake applied. Also hard turning when vehicle is on and in park,wont turn.

Posted on Apr 10, 2010

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I have the same thing with my 2001 f350, I suspect the brakes reduce the pressure to the power steering. I have been looking for a higher performance pump but have not found one that would work. It seems to me that if you increase the working pressure then the brakes won't rob enough to cause the steering wheel to be feel heavy or stop. Or one could covert the system to a vac. boosted brake system, My 1996 F350( I had be for) had a vac. pump driven of the belt. I had it go out pulling my toy hauler, still had some brakes but had to push really hard to get stopped. Might be room under there for both.

Posted on Apr 17, 2013

I have the same problem with a 2003 F350 6.0L diesel, i have been told by the dealer that if your foot is on the brake your steering wont turn because of the same thing aubd was mentioning with the hydrovac. I recently went to another shop and he has an F350 that used to have a similar problem to mine where the powersteering is hard to turn when stopped and your foot wasnt on the brake he said that there is a little microscreen in the pump that is probably clogged. He suggested that I take the high pressure line off and the screen is right there, then just to blow it out.
Hope this helped.

Posted on Sep 14, 2008

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Hope that helps, good luck.

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