2000 FORD WINDSTAR, ON NUMEROUS OCCASIONS WHILE ON A HILL,THE BRAKE PEDAL WENT TO THE FLOOR AND THE VEHICLE WOULD NOT STOP. PULLED EMERGENCY BRAKE, BUT WAS NOT IN TIME TO STOP VEHICLE FROM CRASHING INTO DUMPSTER AND CAUSING EXTENSIVE REAR END DAMAGE. DEALER WAS UNABLE TO LOCATE REASON FOR FAILURE, STILL HAVING BRAKING DIFFICULTIES WHEN ON INCLINE AND BACKING. DATE GIVEN IS ESTIMATE, PAPER WORK AT HOME. *JB