99 Disco II. Driving home from home last night and rpms went up, and speed started slowing down; almost like was shifted into neutral while driving not knowing it. Tried all gears in high and low D, 3,2,1, only reverse works. Sounds/feels like it is not engaging anything to make the car move forward. Had it towed and still same problem today, no forward motions int he forward gears, only in reverse. Transmission and fluid was mediocerly kept up. Anyone had this problem or know what it could be?

Thanks

 

May be either the valve body in the tranny or a low voltage issue. Get it into a tranny shop and see what they can get from the ECU.
Mike