One problem related to accelerator pedal has been reported for the 1999 Ford F-150. The most recently reported issues are listed below.
The truck was started, when put in drive, the truck went into full acceleration. Brakes were applied, but were not effective. Truck was still accelerating. Then turned off the key, to stop engine. The engine did not stop running for a few minutes. This was a terrifing experience. If it would have happened in town, or on a busy highway, yes somebody probably would have been killed.