ABS issues, not going there. This sounds like a real "discussion" we had on this board the day.

ABS systems are tempermental and designed to disable if there's an problem. Speed sensor replacements on some vehicles are a common issue. Your best to take it back to the dealer or shop that did the work and have the check the whole system{wiring and connector included} while replacing the sensor.
(Message edited by Maritime Storm on December 05, 2004)