ODI has received 50 additional complaiints on MY 1993 Ford Taurus and Mercury Sable vehicles alleging malfunction of the windshield wiper system including; intermittent or complete stoppage of wiper sweeping; inadequate sweep speed; and other general complaints of poor performace.In some cases, the owner alleges havingto leave the roadway or roll down the window and manually restart the sweeping motion of the wiper arms.Other complaints allege that the wiper sweeps too slowly at the maximum speed setting resulting in inadequate vision during heavy precipition.Some complaints allge repeated wiper system malfunctions despirt having their vehicles serviced at Ford dealerships of replacement of the multi-function switch and/or wiper motor.Ford provided its response to an Information Request Letter indicating that the same wiper motor is used on the MY 1987-1993 Taurus and Sable; however, warranty and complaint data show that the MY 1993 is over represented and may warrant particular attention.An Engineering Ananlysis is necessary to determine if a potential safety defect exists.