Dawgsfan196977

I have a 94 F150 4x4 Flareside. Trany type E, I think it is a E4OD. Several years ago I hauled a car through the WV mountains, a couple of years later the trany seems to be shifting late with loss of power. It has 114k miles on it and never had the filter of fluid changed. I am no way a mechanic and know nothing about tranys. Could changing filter and fluid solve my problems or did I burn up the clutches?