It works at normal speeds just fine. I really haven't had the chance to test the ABS system at speed but the car was stopping fine normally. See, the car is put away for the winter with exception to the weekly or every other week drive. It just happen to be that the roads were really snowy and stuff when I noticed this problem. I was thinking that a thorough flushing might clean some of the electronics in there and I hear it is supposed actually function better sometimes. And the tire sensor is another good idea to check, thanks. Do any of you know if there is a sensor on just one or all four of the brake system.