1990 f-150 will not go into gear
I have a 1990 F150 with E4OD Tranny. When I start the truck it will go into reverse or drive but then will "slip" out of gear and not move. I have to turn off the truck for a couple of minutes and then restart and it will go into gear but then slip out again. I replaced the Neutral Safety Switch (NSS), also know as Trans. Range Sensor or Manual Lever Position Sensor. After installation I still have same problem. Anything else to check?