Damaged brake booster on my 1937 ford coupe when loading onto trailer. replaced booster with a new one. bled mc. -1. bled passenger back brake - 2. bled driver back brake - 3. bled passenger front - 4. bled driver front. brake pressure fine when car is not running / no brakes - no pressure- no nothing when car is running. have changed brake booster 3 times. have checked vaccum hoses. please help! desperate! help!
SOURCE: fading brake pedal
Perfect well at this point i would say that tha abs valve is bypassing fluid. If you can un hook the line that comes into the abs valve and plug it and try and bleed the system where you cap the line going into the abs valve. If you get a good pedal after pluging the line going into the abs valve this tells me that the abs valve is bypassing fluid give it a try i have ran into this a few time and the abs valve has been bad. Also can you rate this sluton also i do hits on my own free time thanks good luck
SOURCE: 98' Ford Windstar has a spongy brake
Have you had anyone try to clean and adjust the rear brakes? You will need a shop to scan the van for ABS codes first to cure the ABS light.
SOURCE: Fiat Uno Pacer - Brake Booster not assist braking
it could be that the master cylinder is bad or the brake booster is bad also check the vacum hose going to the brake booster if it has a hole in it it will lose pressure and make the engine lose rpms
SOURCE: replaced the brake booster how do you adjust for
Possibly the Proportioning valve. its where the lines go after the master. it has a bleeder screw of some sort on it. The pins inside wear out and stick causing uneven pressure. Replace or rebuild it if that be the case. Also chect the master for fluid leaks at the end of the piston where it connects to the booster push rod. If its leaking rebuild or replace it.
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