1996 FORD F-250 — POWER TRAIN:AUTOMATIC TRANSMISSION:PARK/NEUTRAL START INTERLOCK SWITCH

UNIT WAS PARKED AND SHIFTER PLACED IN THE "PARK" POSITION. THE TRUCK ROLLED BACK ACROSS THE PARKING LOT AND CAME INTO CONTACT WITH ANOTHER VEHICLE. WITNESSES ON THE SCENE VERIFIED THAT THE SHIFTER WAS IN PARK BUT THAT TRANSMISSION WAS NOT ENGAGED IN THAT POSITION. AFTER THIS INCIDENT, IT WAS DETERMINED, BY EXPERIMENT, THAT THE INDICATOR ON THE SHIFTER DID NOT SHOW THE ACTUAL GEAR. WHEN IN "PARK" THE TRUCK WAS ACTUALLY IN EITHER REVERSE OR NEUTRAL. ACCORDING TO OTHER SOURCES, THIS PROBLEM, OF EITHER JUMPING OUT OF PARK OR NOT BEING IN THE GEAR INDICATED, HAS BEEN A PROBLEM WITH FORD AUTOMATIC TRANSMISSIONS IN THE PAST.