Why is 1990 Lincoln Town Car rear air suspension system not raising car even though the compressor comes on and the sensors are working correctly?

You probably got a hole or crack in your airbags. This will also cause the compressor to work harder and eventually it will die too. When I found this out I got a conversion kit for my Lincoln. I would try Strutmasters, they have a lifetime warranty and guarantee there product will last the life of the car. Good Luck www.strutmasters.com