My bmw e39 523i touring, had problem re: air suspension and i already replace the airbag with the new two unit and also the new motor pump which also broken. the problem now is my rear car seems did not raise to the original level (now just about 2 or 3 fingers gap). but this only on the right side.on the left side is ok...please help me ([email protected])

SOURCE: BMW 528i s reg rear suspension

Check for pressure out of the air pump. If there, then the problem is a blown seal in the shock.

SOURCE: 2003 Lincoln Navigator air suspension

I would recommend going to strutmasters.com and taking a look at our conversion kits. these convert you from the airbag to a powder coated American made steel coil spring that is guaranteed to last the life of the car. Airbags and compressors are constantly having to be replaced. Also something alot of people don't know is that theses air suspensions are not meant to be in temperatures above 90 Degrees or below 40 Degrees. That is most of the world. The temperature will cause you to replace alot of bags. and typically when your replacing a bag you are going to have to replace the compressor to because the bag had a hole or small crack in it causing the compressor to over work and it will die. I posted the link below so you can take a look http://www.strutmasters.com/lincoln-suspension-parts-s/1.htm I hope I was of some help Good Luck!!!

SOURCE: Rear suspension on 1998 Ford EXP wont raise

More than likely you have an inner leak in one of the strut assem. in rear.

SOURCE: rear air suspension is not at level left is higher than the right

I have the exact same problem but my Left side is "Lower" than the right side.... Go Figure, Let's switch Solenoid's... Lol. I haven't seen a fix for this yet... there is 1 ride height sensor bolted to the rear but it's for both sides. the following site seems to be recommended by most Expo owners on all of the ford forums.. Check them out.
http://www.suncoreindustries.com/english-ford-expedition-97-02-air-suspension.html

SOURCE: just had car dealership repair 1997 lincoln town air ride

Those Lincolns are notorious for that,I'd just get a set of coil springs out of a Crown Victoria cop car(junk yard)and swap them out.Done it many times,you can do it in about an hour,and they'll never leak down again.By the way,there's some O-rings in that system.Make some soapy water and spray every connection,just maybe you'll get lucky.