>From what I can tell, the suspension is indeed "air ride". On the rear, there are two rather normal looking shock absorbers and two nifty little "air springs" or bellows or bladders, as we call them in the trucking industry. The right side shock has a "ride height sensor". It appears that this is an electrical device rather than the traditional mechanical unit. That sensor actuates a solenoid on each of the bladders to inflate or deflate them as needed. There are a few other devices and sensors that act upon this system but that is the basics of the rear end layout. The front, apparently, has "air shock" type struts. I could be wrong about the exact configuration of the front air ride system because I don't think my particular car has air ride in the front. This system is, IMO, all together way too complicated. It is no surprise that the air ride is often the first thing to get torn out of these cars. I don't know why a simple air ride system like that found on any highway tractor or tour bus would not be the way to go. Those units run for millions of miles without failure! I intend to install regular Dynasty shocks in the rear and then fit a mechanical leveling valve to the rear axle and re-work the plumbing slightly so it can more reliably act on the air springs in the rear. I love air ride. It is the best thing for a car that might be carrying a back seat full of adults and a trunk full of luggage. My motto with it is, however, "keep it simple". ----- Original Message ----- From: "jsadowski" <jsadowski@xxxxxxx> To: <mailing-list@xxxxxxxxxxxxxxxx> Sent: Saturday, August 17, 2002 12:30 PM Subject: Re: IML: 1990 Imperial Coming Home Is this car equipped with air suspension? I've seen some of these cars on the road that it was apparent something was wrong with the rear. The 90 5th Ave I used to own had auto leveling rear suspension but not air suspension as some of the Imperials did. I would think the shocks that fit the 5th Ave would fit the Imperial also. John