The 1990-2002 Lincoln Town Car is built with the following rear suspension components:
1990-2002 Lincoln Town Car Air Springs (x2) - A plastic and rubber air spring (also called air bag) that uses pressurized air to support the weight of the rear of the vehicle. The rubber air springs (which take the place of a traditional metal coil spring) are the number one cause of all air suspension leaks. Since all air springs all go bad at about the same rate, if one is leaking, the others will not be far behind. For a proper repair, all of them need to be replaced at the same time.
1990-2002 Lincoln Town Car Shock Absorbers (x2) - has metal tubing filled with gas-charged hydraulic fluid that dampen vibration and control bouncing caused by travel on rough roads.
1990-2002 Lincoln Town Car Height Sensors (x2) - a linkage located near each wheel of a vehicle that, either mechanically or electronically, measures the height of the vehicle and reports this information to the control module so adjustments can be made. The ride height sensor is a moving part, and like all moving parts, they will eventually wear out.
1990-2002 Lincoln Town Car Air Lines- tubes that carry pressurized air from a compressor to the air springs in order to adjust the height of the vehicle.
1990-2002 Lincoln Town Car Solenoids (x2) - these plastic and metal components work along with the suspension control module to regulates the air pressure for each air spring. Solenoids start to leak as they wear out causing the vehicle to sag or to lean. This will cause the ride height sensor to send a signal to activate the compressor in an attempt to inflate the air suspension and level out the vehicle. This excessive work load will eventually lead to total failure of the compressor.
1990-2002 Lincoln Town Car Compressor Assembly- Creates and sends pressurized air to the air springs. When the air suspension starts leaking, the compressor (also called a pump) starts working harder to try to keep the system inflated. By the time air suspension leaks down completely, the compressor will either have failed or be well on its way to full failure. Buying replacement air springs and having them installed, only to find out the compressor still needs to be replaced, can be very frustrating and expensive.
1990-2002 Lincoln Town Car Dryer- prevents moisture build-up inside of air suspension parts.
1990-2002 Lincoln Town Car Suspension Control Module- a computer which is responsible for the operations of the air suspension system and maintaining the vehicle's correct ride height.
1990-2002 Lincoln Town Car Rubber O-rings- Although they are the least expensive parts of the air suspension, they are responsible for maintaining the seal where all of the air lines connect. Be sure to replace the O-rings when repairing any air suspension system.