The brake hydraulic lines may still have to be bled or you may have gotten grease on the rotor.
Bleed the master cylinder.& then rebleed the system.
How to fix brake will not bleed out
Check for leaks under vehicle. You may have blown a hole through a rusty brake line.
you either need a new brake master cylinder or your brakes need to be bled
There is still no fluid pressure. Make sure that the master cylinder was bled as well as the wheel cylinders. New master cylinders can be tough to bleed all of the air out. The new master could be defective.
If you didn't bench bleed the master you need to do that before you install the master.
The ECU for the ABS brakes is attached to the Master cylinder for the brakes.
Make sure the new master matches the old one. Match the depth where the pin goes into the master. The masters are the same.
probably have a bad master cylinder.
if back brakes are drum i would think they are worn out not allowing pistons in wheel cylanders to return. also could be valve in master cylander.altho that would cause all brakes to lock up. if disk brakes your calipers need overhauling or replacing
master cylinder is sticking
Did you bench bleed the master ? Are the calipers and wheel cylinders working properly ? Is there a break in the line somewhere ? Last , is the booster working properly ? What happens when you step on the brake now ? Are they soft and spongy ? Does the car stop at all ? More info is needed to answer this question properly.
Master Cylinder internal seals are failing. Replace the Master Cylinder before you have an accident when it fails permanently.
Check to see if you have knocked the brake light switch off of its mount. It is located above the brake pedal.
You did something wrong. -Go back over all steps carefully (preferably with manual) and see where you went wrong.
. If you have the 4-port master cylinder, the bottom ports go to the rear brakes & the upper side ports go to the front brakes.
faulty master brake system
Probably either from air in the lines or the master cylinder leaking and in need of repair before the brakes go out entirely. To tell the difference, if you pump up the brakes and hold pressure on the peddle and it stays up and then you let off of the peddle and it goes down, it is probably air, bleed the brakes. If after pumping up the brakes and holding pressure it slowly leaks down, you are either losing fluid somewhere or the master cylinder internal seals are bad, fix them before the brakes are gone when you need them.
get a new one then bleed your brakes A new Ford master cylinder must be bench bled before it is installed, or it will be impossible to bleed the system later.
there is a possibility that you have a malfunctioning master cylinder. my dodge neon ate up two sets of pads/rotors and drums before we found that the master cylinder was causing the brakes to stick.
Service brakes - replace Master cylinder Parking brake- either lubricate or replace cables ; I had a similar problem with my 1999 Chevy blazer, i ended up replacing the caliper and have had no problems since.
You more then likely got air in the lines when you changed it. If so you will need to bleed the brakes.
Sounds like air in the brake lines or power steering fluid in the brake system instead of brake fluid.
front front - rear rear.
you either need to bleed your brakes, add fluid or get a master cylinder email@example.com