I have a 99 f250 SD with 150000 mi. I did a AT filter and fluid change. Went for a three mile test drive and everything was fine. A day later I went to go to work and it would not shift into reverse. Drove it foward and only got to 2nd gear. At home I let it roll foward and put it in reverse and then it grabbed. Now I dont have a problem with reverse but it still will not shift into 3rd or 4th. When you drive it to about 45 mph and let off the gas is seems like its in nuetral. No codes are showing. Someone pleeeease help me. Thanks for reading.