Front-wheel-drive vehicles use a split-diagonal hydraulic system so the two front brakes are on separate circuits. Rapid wear on just one side can be caused by a restricted flex hose, either because under light braking the brake fluid can't get through, or after heavy braking, the fluid can't release right away. Usually the complaint is the brakes are dragging and the wheel is getting hot when the fluid doesn't release.
Park on a slight incline, shift to neutral, and see if the van creeps downhill when you release the brakes. If it doesn't, try to open the bleeder screw on the caliper with rapid pad wear. If a little fluid spurts out and the van starts to roll freely, look at the metal bracket crimped around the rubber hose. Use a large channel-lock pliers to open that crimp up just a little. Over time rust builds up inside that crimp and constricts the hose.
Sunday, August 26th, 2012 AT 6:12 AM