I had a 1996 Mustang Cobra with the same problem, you'll find where the cable goes around the front of the motor, the inner cable wears away the outer casing (not visible) this binds when the clutch is depressed, mine got to the stage where I had to almost stand to operate it. After a new clutch, several mechanics telling me the cable was fine, I had a guy pull the cable out and show me the problem. Had a new cable made in Liverpool NSW and it was great from there on.