1999 MERCURY GRAND MARQUIS — POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

THE AUTO PRODUCED AN UNCONTROLLABLE SKID WHILE BRAKING ON A WET ROAD AND PROCEEDING AROUND A RAMP. RATHER THAN PROCEED LEFT WHILE TURNING ON THE RAMP REQUIRING ONLY A MINOR NEGOTIATION OF A SLIGHT HILLED AND CURVED ROAD, IT PROCEEDED INTO A RIGHT DIAGONAL TURN INTO THE GUARD RAIL AND WOULD HAVE PLUNGED INTO THE ADJACENT DITCH ABSENT THE RAIL. IT THEN BOUNCED OFF THE RAIL AND RATHER THAN PROCEED STRAIGHT AS THE STEERING WHEEL DIRECTED IT WITH A SLIGHT TURN OF THE WHEEL, IT TOOK A SHARP LEFT DIAGONALLY PROCEEDING STRAIGHT TOWARDS THE MEDIAN STRIP OF ONCOMING TRAFFIC LESS THAN AN APPROXIMATE 1/4 OF A MILE AWAY. IT SUDDENLY TOOK A STRAIGHT PATH AFTER VEERING WITHIN 1/2 YARD OF THE GUARD RAIL SEPARATING IT FROM THE MEDIAN STRIP. IT HAD BEEN DIRECTED TO GO STRAIGHT BY THE STEERING WHEEL MUCH EARLIER BEFORE LEAVING THE RAMP. THE CAR PERFORMED LIKE AN UNCONTROLLABLE ROLLER COASTER OFF OF ITS TRACKS.*JB