I have an 87 F150 that I recently purchased and just today my overdrive off light on shifter started blinking and odometer is not functioning, along with no overdrive of course. Took it to local shop and it ran 3 codes, 539, 124, 452. Tried to look up codes and they only goto 100......LOL. Transmission guy is out of town so I quess I will drive it like it is until he returns. If I had to guess I would say it is a solinoid in the transmission or something actually in the shifter that has to be replaced.
Of course by my V.I.N. the truck came out with a 6 cylinder and now it has a 5.0 the overdrive worked great and had no problems for the first 2 months i had the truck, so maybe it is something simple.
Last edited by DavesFord; 06-09-2008 at 02:30 PM.