I have a 98 Acura 3.5RL that the driver side rear brake pads are dragging. This problem seems to come and go. I have done all the common sense things like clean and lubricate all appropriate caliper parts, assure that pads move freely, and replaced the flexible hose. I'm begining to believe the problem is in one of the ABS system components. None of the other calipers have this problem. Can you help guide me in the right direction to proper diagnosis?