Recently my driver's side front caliper has been freezing up on me. It'll happen if I need to stop faster than usual. Can't begin to tell you how annoying it is having the jeep wanna go left and whenever i hit the brakes, the jeep suddenly wants to go right. Anyhow, if I let her sit for an hour or so, the caliper seems to "unfreeze". Haven't had the time to take the caliper apart until this weekend. Tomorrow I had planned on replacing both front calipers and pads (considering how old they are). Just wanted to get some outside input. Does anyone know what type of pressure regulator these jeeps have (if equipped, maybe that part has gone bad), or does the system just pump fluid through four separate lines? anyhow, appreciate everyone's time.