Question about 2000 BMW 7 Series

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Power steering feels like manual steering now

The other day my car was fine, then all of a sudden my power steering felt like it turned into manual steering. I stopped at a Advanced Auto Parts and checked the PS fluid. It was down near the bottom of the container. So I got some ATF, as the cap said ATF only, and I filled it up. However, it still feels like manual steering. The belt on the car is fine, the power steering pump was replaced last year. What other causes could effect the power steering on a 2001 BMW 740i??

The only other thing that has been happening to the car is that the ABS/Brake lights come on every now and then and then go off later on, or vice versa will be off and then come on while I'm driving down the road. I've found on the internet that it's probably an ABS wheel sensor or the whole ABS module. This wouldn't effect my power steering would it??

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  • robbie477 Apr 21, 2009

    Yes, there isn't any noise, at least none that I can hear. So having the PS pump bled will most likely fix the problem or are you saying the PS Pump is dead and will need replacing? Reason I ask is I just had the power steering pump replaced not even 12 months ago when it locked up and tore the belt and such.



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Power steering problem:

You have a leak (obviously) and now filling it with fluid has trapped air in the system. It needs to be bled (just like brakes) to operate properly.... However this would usually cause noise during steering which you have not mentioned.

I would put money on the failure of the power steering pump!! Especially if it was operated for any lenth of time with low fluid.

Yes - you are correct - ABS intermittant problems are most likely a sensor... and not related to your steering problem. Another common ABS failure is the ABS ring (attached to the spinning axel that the sensor gets its feedback from) - however if it is cracked - the light would stay on consistantly.


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Posted on Apr 21, 2009

  • blueextc3221
    blueextc3221 Apr 21, 2009

    yes - unfortunately, the 7 series are prone to P/S leaks and failures.



    Since the pump was run low on fluid - the seals wore prematurely, and your pump has once again failed.



    You might attempt to bleed the lines first - but as I stated before - air in the system would lead to an audible screech near the end of travel in either direction. (you would definately hear it.)

    If the steering is hard at all times... the p/s pump has definately failed.



    Sorry for your loss :(

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