Have a 92 bronco 302 with a e40d trans I can disconnect the battery for 20 minutes drive it around for 20 minutes and have no reverse after. I put a new junkyard trans in and after 2 days and about 60 miles of driving same problem occured.. Any thoughts/ help would be greatly appreicated

 

There are some guys here who seem pretty knowledgeable with the E4OD, unfortunately for you I'm not one of them lol. I am sure someone here can give you a reasonable explanation though.

 

Mlps. Was the sensor the original or the one off the replacement transmission?
Some sensor i feel like

 

The sensor was off of the original but I had replaced the sensor to the updated one already

 

http://www.fullsizebronco.com/forum/...E4od+diagnosis