This is why...
The passenger front bag I believe has some dry rot causing it to leak if I park it a certain way and if the temp drops overnight..it has happened several times over the last year or so. Also I think one of the rear bags is bad too. The whole car always leans and is lower on the passenger side even when running with the bags inflated and I can't figure out why, the ride height sensors are fine and it vents when shut off, but the left front is always higher causing the whole thing to lean toward the pass side. I tried adjusting the ride height sensor on that corner and it just made the front bags leak down and slam over night so I put it back to normal. Just too many quirks with the air ride on this car and I don't feel like just replacing one or two bags and still have two old old ones still on the car..and I'm certainly not going to replace all of them and have the compressor rebuilt and replace all other components just to fix it and get it back to normal ride height, sure I could sensor lower it but then the ride quality sucks..I don't care about being able to raise and lower it, I just want it at a consistent lowered ride height which is why I went and bought a 1.25" lowered kit from tokico for a Thunderbird/cougar, and got dlf's perches and isolators..I did it the right way and didn't just buy American air's kit which I've heard is junk from most people.