Agitates but does not spin
My Kenmore Series 90 direct drive washer sounds like it's spinning, but is not. I checked the motor coupler and it is fine. The clutch seemed fine but I replaced it anyway and it did not fix the problem. The lid switch works OK also. The problem is intermittent, sometimes it spins, sometimes does not. The rest of the cycle works, including agitiation. What else can it be?