Hey all, Posted a thread a few days ago about the problems i was having with my brakes. Been trying a few things but have not had any success yet and its really starting to piss me off so hopefully someone can help me. Car is a VL turbo with VXSS brakes at the frount and drums at the rear. The frount brake pads are 3 months old. Problem(s). Brake pedal travels to the floor, not braking as well as it should. What i did: I bought and replaced my old master cylinder with a new one (1 inch). Bled the brakes at work with one of the other mechanics. brakes arn't spongy. Still having problems. Take my drums off this afternoon thinking a mechanism may have come off. All in perfect working order. Replaced vacumm booster tongiht with a new one a mate had at his house. Before when car was turned off the brake pedal was still remaining soft as if it wasn't getting rid of vacuumm. Now it goes rock hard like its supposed to after 2-3 pumps on the pedal once the car is off. However when driving its exactly the same. Brakes kick in 3/4 of the way down. Am almost touching the floor. Tonight decided to do a few tests. Stuck my head out the window and hit the brakes as hard as i could. The frount brakes did not lock up at all where the rear right hand side brake locked up. Also the BRAKE warning light comes on when i slam the brakes on. Brake fluid is on the max mark and has't droped a bit in the last couple of days. Please need some input here. I really don't know where to go from here. Tommorow i'll inspect frount brakes and try to determine whats going on but i really don't know. Maybe slides are stuck only allowing inside pad to contact disc on the frount brakes??? I double checked there were no clamps, etc on the frount brake lines and they all appear in order. The car when i slam the brakes on is still heaving foward as if the brakes on the frount are somewhat working however the car used to stop on the spot. Its also incrediably dangerous to have the rear brakes lock up on as i found out tongiht so i desperately need this fixed.

if your warning light comes on then the piston has moved to far down the master cyl bore for some reason. maybe you have a master cyl for a car with discs on the back

its possible. Im positive you were supposed to use the 1" master cylidners with the VXSS brakes regardless of whether you had drums or discs on the back., I do have a very strong feeling it is the master cylinder as you said its like the piston has run out of room to travel and the frount brakes feel like they start to come on as my foot is virtually on the floor. I'll call the brake place tommrow and find out. As my brakes feel worse now than before when they were spongy from the primary and secondary seals in the master cylinder not holding pressure correctly.

Found out what it was. My rear wheel cylinders were rusty on one side not allowing the shoes to move out until the pedal was aboput 3/4 way down. Replacing both tommorow and machined my drums tonight so shoes will be smick.