I have a 1999 lincoln continental and when i turn the car on the rear air suspension goes down and does not lift up, and my muffler is nearly dragging how can i fix this problem

There is also a conversion kit to replace the air suspension with conventional shocks. It costs a bit less last time I checked, but you may lose some of that "Lincoln" cushy feel, and you will lose the load leveling abilities of the air suspension.

You should call around to Autozone and Oreillys and ask if they have a scanner for the air ride. Then if no luck its either a dealer or a frame and body shop.

The system can be fixed with Salvage parts. Some parts sell as reconditioned like the bags. But having someone hook up the right scanner will save you time and money. There are some adjustments that need to be made for the small parts so everything works together properly.