NHTSA (USA)Critical

September 27, 1993

1992 FORD FT900NHTSA Campaign #93V160000

VEHICLE SPEED CONTROL:SPRINGS

Defect

AS A RESULT OF INHERENT VIBRATION IN THESE ENGINES, THE THROTTLE RETURN SPRINGS CAN FRACTURE.

Safety Risk

IF ONE OF THE TWO RETURN SPRINGS FRACTURES WHILE THEVEHICLE IS BEING DRIVEN, A SUBSTANTIAL REDUCTION IN ACCELERATOR PEDAL EFFORTWOULD BE FELT. IF THE SECOND SPRING ALSO FRACTURES, THE THROTTLE WOULD NOTRETURN TO IDLE POSITION AND CAN RESULT IN INCREASED ENGINE SPEED AND THEPOSSIBILITY OF LOSS OF VEHICLE CONTROL AND AN ACCIDENT.

Remedy

THE THROTTLE RETURN CONTROL SYSTEM WITH THE COIL TORSION SPRING DESIGN WILL BE REPLACED.