I have a 1993 f-150 with the 5.8L motor and the E4OD tranny. My truck will not drive in overdrive most of the time. I have to press the overdrive button and turn the overdrive off and it will jolt into gear. It will just rev up and not go anywhere. Sometimes it will drive in overdrive for a little while but when it gets time to actually shift into overdrive it will just rev up like its in neutral and I have to take it out of overdrive and it will jolt back into gear. Trying to not have to replace my tranny. Any help or comments would be greatly appreciated.