Two problems related to transmission failure have been reported for the 1999 Ford F-350. The most recently reported issues are listed below.
We have experienced repeated transmission problems including 2 total breakdowns, the last one on 09-07-2000 endangered everyone in the vehicle. May 9, eratic shifting, speed control sensor had to be replaced, may 10 - may 22, shifting problems continued, control module replaced. May 23, total transmission failure, transmission was rebuilt onjune 8. . June 29, shifting problems started again. July 18, Ford dealer checked, reprogramed transmission and told me no problems found. July 31, Ford dealer load tested truck, replaced module and reprogramed again, everything ok. September 7, towing trailer down 7% - 7 mile lewiston grade transmission failed, lost engine compression braking and had to rely only on brakes to slow truck. Had no transmission in any gear when we reached bottom. New transmission now being installed. This is a safety problem which placed everyone in the truck in danger.
The transmission failed. Nlm.