I have a 2004 F-150 (automatic trans. w/118,000k)and my transmission has been going into neutral while Idrive in D at about 30-45 miles per hour. I can turn overdrive off and drive in all three speeds without a problem. All other gears are working as well. I checked the fluid and it is full and clean. I also checked the overdrive fuse and it looks fine. Is there any chance its something simple or am I going to have to remove the transmission?