Steering Gear May Fail on Mercury Grand Marquis

None found but car wanders on highway at speeds above 50 mph . IN wind it is almost undriveable . 2001 Mercury Grand Marquis . Have read many with same complaints suggest rear stabilizer and check idle arm bushing should be 50 lbs of torque or less and not binding .

Same problem just changed pitman arm and gearbox still floats. Just found broken stabilizer end link broke I think it's the problem