This car sit alot after the electric Brake booster/master cylinder quit producing pressure. My dad bought it and I'm trying to get the rear calipers working. Tried to bleed them and had to replace right caliper cause bleeder broke off. Caliper piston wouldnt come out even with using ebrake and pumping brakes. Replaced hose cause of no pressure at caliper when pushing pedal. still no pressure, replaced the rear proportioning valve, lines and other middle hose going to right rear line to caliper hose. Power bled brakes and have fluid but no pressure when pushing or pumping pedal. Left works fine. I tryed pushing pedal with alot of force but still no pressure. Should I put a T fitting where the proportioning valve is? I'm thinking from not having enough pressure from the master cylinder the pro valve is not letting pressure go to the right rear. You can use the brake manually but without power assist.
Is there a pin under the rubber boot at the proportioning valve ? A helper should press that pin in when you are bleeding the brakes.
No this is a cylinder type with one in and two out. No buttons. I'm pretty sure it's the master cylinder because after replacing the left caliper there is not enough pressure to push that piston out. I need to know if the vacuum type booster will fit in the same holes on the firewall as the power boster. If it does I will see if dad wants me to switch it. It looks like 4 holes like normal back there.
