Question about 1988 BMW 7 Series

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89 bmw 735 il self leveling rear suspension is jacked up high

Rear suspension is pumped up all the way will eventuly go down when not running however when driving pumps back up?

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Hi,i own a bmw 750i,and went over a hump back bridge to fast and left the ground a bit.since then the rear suspension is jacked right up high permanently and makes a screeching sound like gas is escaping...any ideas??

Posted on May 23, 2011

  • KIM BURGERS Oct 08, 2017

    The way BMW determines ride height is a link to the rear anti-sway bar. The link broke on the hump back bridge


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Sounds like their is an air leak in the bags that keep it up. But not enough of one that it will not stay up while driving. Try replaceing them and this shoild fix ya.

Please contact me if your problem presists.

Thanks, Charlie

Posted on Feb 04, 2009

  • 2 more comments 
  • KIM BURGERS Apr 23, 2013

    Charlie: The system they use on BMW's is hydraulic. The power steering pump provides the pressure that, through a pressure accumulator, pumps up the rear of the car. There are NO air bags.

  • polynesian products May 08, 2013

    nks for info? so u have to replace accumalator? does a cross member end link cause rear to lift

  • polynesian products May 08, 2013

    i own a 1990 bmw 735il rear is jacked up high after friend lifted my car to change oil pan.he broke my end link too

  • KIM BURGERS Oct 08, 2017

    There is a 3" long link that connects the rear anti-sway bar to a ride height sensor. The ball and socket joint on that link has failed.



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