FranciscoJ80

Hi there! My name is Francisco. I’m owner of Land cruiser 80 series with a 1FZ engine. My car have brakes problem. Its lock the brakes by itself and to continue driving it have to stop and bleed the brake. I have already change s the all 4 brake calipers, I have change the vacuum switching valve, the brake pum and the Central Vacuum reservoir, I both new brake pads also. But the problem persist. Please help!