I can't use my windows any longer, all four are going down, but won't go back up.
windows will go down, just won't go back up. on 1991 Lincoln Town Car
This is usually a switch problem. The motor(s) work, or the windows would not go down.
You have a bad actuator. The motor and switches are fine. The guides are either worn out or bent. Replace the window actuator to gain up and down usage again.
2 more answers
most of the time its da master switch if you replace that it might fix the problem
inside the motor are three little round plastic/nylon bushings you can buy at a parts store once you replace thouse your set they wear out and crush with time