1994 F150; 6 cyl; automatic; 144k miles.... Left home this morning in 80 degree weather and the E4OD automatic transmission seemed to be slipping in D until the truck warmed up. Cranked fine but revved high with little forward motion when I gave it the gas in Drive. Once up to normal operating temperature the transmission performed just fine. Seems to work fine in 1 and 2 gears. Transmission has been rebuilt about 3000 miles back by competent shop. Is there a temperature or other sensor that sends signals to the transmission that could be the problem? Once the truck warms up to normal operating temperature, all works fine (takes about 1 mile). The problem feels like what low fluid causes but it is full of fluid. Any ideas? Thanks.

 

Pull codes.

 

1994; 144k miles; 6 cyl; automatic... a follow up to my question about 'slipping' transmission... took the truck in to the shop that rebuilt the transmission (old world shop, been in business for years and rebuilt 3 other transmissions for me) and they suspected solenoids so replaced the solenoid pack installed when the tranny was rebuilt. No good result, still had that slipping motion when cold. They said they did not think it was the transmission but probably an electrical or electronic connection and recommended a local shop to check. They pulled codes and said I had a 512 'KAM' code and a 225 'No knock signal'. They didn't know if these were causing the problem or not. Anyone know what these two codes mean and how they can be fixed??

Note: Archie, owner of the tranny shop, said 'no charge' when I asked how much I owed. That's a way to keep customers like me.