AT 50 MPH MY RPM RUN HIGH AT ABOUT 4

Question

when I  drive my  ford at 45 mph no problem but when I hit 50 mph my rpm go up high at about 4

Answer 1

when the RPM goes higher that a indication of the transmission slipping. Check to see if any code are set when this condition occurs, There may be no CK ENG LT on, but if you have a scan tool that can do a KOER (key on engine running) check to see if any code is set.