I have a 2000 F-150 extracab with 139k miles on it. Sometimes when I am on the higway the transmission will not go into OD. I can pull over and turn the car off then back and it works fine for the remainder of the trip. It doesnt happen every time just every once and a while. I'm thinking it may be computer related due to the ability to reset. Any ideas?????

 

i know it has to warm up before it will go in to od