Accelerator Stuck problems of the 2005 Ford F-250

The contact owns a 2005 Ford f250 super duty diesel. While passing another vehicle the vehicle's accelerator became stuck and a loud noise was heard from under the hood. The vehicle then suddenly stopped and then it stopped accelerating. While driving further, the consumer tried to speed up the vehicle to see if this would happen again and it did. It popped and then vehicle stopped accelerating. This would happen at speeds around 40-55 mph. The dealership checked the codes, but could not find any codes for the problem. The mechanic took it home over night and nothing happened while he was driving it. Since they could not duplicate the problem they told the consumer to come and pick up the truck. The consumers foot was not on the accelerator pedal. The consumer held down the brake pedal to try to hold the vehicle in place, the loud noise was heard. The consumer experienced unwanted acceleration.