i have a 1993 f150 4x4 not sure what transmission it has but it only shifts are high RPMs (about 3200) for every gear i change the Speed sensor that did'nt help i'm not really sure what else it could if you have any ideas please let me know thanks!

 

E4OD, check for tranny code or check wiring harness going to the trans, if not converter might be going.

 

Do you have the electric or mechanical auto, the easiest way is the OD off switch. The mechanical uses fluid pressure and a tv cable that controls the shifting.

 

the tranny wont shift up is the problem so driving around at 40 mph the RPMS are about 3000

 

Is it a electrical or mechanical operated transmission. They are totally different control and troubleshooting methods. It could be the computer messing up, not enough pressure, to much pressure, bad tps, bad tv cable, or a whole list of other problems. What is the fluid level like?

 

its electrical the fluid level is good