Previa brake problems
I have a 1992 Toyota Previa non ABS with 4 wheel disc brakes at 184,000 miles and have recently experienced brake problems. The brake pedal goes almost all the way to the floor and prior to my bleeding the system the brake light would come on. I went to the military auto craft shop and bled the entire sytem as per the Haynes manual to include the load proportioning valve. This cured the light problem but not the weak pedal. I had the mechanic test drive the car and he suggested that I should replace the master cylinder. The brake pads are fine and there are no leaks nor have I had to add any fluid. I changed the master cylinder and bled the system and still have the same weak pedal with the engine running. The mechanic suggest that I should replace the load proportioning valve. The engine also runs fine when the brake pedal is depressed if it did not he suggest that the booster would be the problem. So before I drop another $100 on parts and my own sweat and blood replacing the load proportioning valve I seek your advice. The Haynes manual said if you having brake problems to have the dealer adjust the valve or replace it. Please help????
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