(ABS problem): Sounds like a short somewhere.
(idle problem)You may want to pull the diagnostic codes from the ECM first. You may just have a bad sensor. The link below explains how and what the codes mean.
http://www.geocities.com/dann8785/se...nginesoon.html
(Digital speedometer problem): Good and accurrate description. Had the same problem. I know repairing it can be done, but will cost you. The down side of replacing this module is that the odometer is part of it and you need to keep the paperwork if and when you sell your car.