VEHICLE SPEED DECELERATED AND WRENCH LIGHT CAME ON TOOK TO FORD DEALERSHIP (ON VACATION TRIP) HAD TO LEAVE THE VEHICLE AS THEY SAID NEEDED NEW THROTTLE BODY----AT APPROX. 103,767 MI. APPROX 107,178 MILES SPEED DECELERATED ON TRIP AND WRENCH LIGHT CAME ON.WHEN TURN THE VEHICLE OFF WRENCH LIGHT GOES OFF AND DESIRED SPEED CAN BE RESUMED. TOOK TO FORD DEALER AND SAID THEY COULD PUT IN NEW "BRAIN" OR NEW TRANSMISSION. TOOK VEHICLE TO MECHANIC FOR SECOND OPINION AND THEY SAID IT WAS TRANSMISSION AND SUGGESTED TAKING TO TRANSMISSION SPECIALIST. TRANSMISSION SPECIALIST AGREED TRANSMISSION HAD TO BE REPLACED.THE VEHICLE WAS TAKEN OUT SEVERAL TIMES BY THESE MECHANICS AND VERIFIED THAT IT WAS SHIFTING OKAY AND OKAY TO DRIVE. LEFT THE MECHANIC PLACE OF BUSINESS AND WAS SITTING STOPPED AT A TRAFFIC SIGNAL WITH FOOT ON BRAKE PEDAL AND VEHICLE LURCHED FORWARD AND RAMMED THE CAR IN FRONT OF THE VEHICLE. LOOKING FOR ANOTHER VEHICLE AND SO SCARED TO DRIVE THIS ANYWHERE. *TR