Donna - I have had this problem for years on two different Imperials (a 64 and 67). The problem seems to be that the clutch inside the motor housing sometimes slips resulting in the situation where the motor turns but the window doesn't. Here's the fix that works for me. Don't do anything. That's right, my problem windows "fix themselves" after a while. Go do something else and then try it again and I'll bet the little guy works just fine. Sometimes it takes a day or two, but it always works again and usually continues working for months. Ken Miller 61 and 67 Converts