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Why is the brake pedal on your 99 silverado hard and your brakes are stuck?
Possibly a bad master cylinder.
Can the brake booster cause your brake pedal to go to the floor?
No, a busted brake booster will not cause the brake pedal to go to the floor. It will however cause the brake pedal to be extremely hard to push. A defective master cylinder will cause what you describe. Replace the master cylinder and bleed the brakes. It can because it happened to me. The booster lost vaccum and the pedal went to the floor. Sorry, you are wrong. The only reason the pedal went to the floor was because the master cylinder failed. The brake booster only boosts the pressure on the master cylinder and allows you to not have to push so hard on the brake pedal. Cars of yesteryear did not even have a brake booster and they stopped just fine albeit you had to push the pedal allot harder than with power brakes. A failing brake booster will not cause your pedal to go to the floor although it might cause it to go lower than normal before the brakes apply. As long as the master cylinder is good you will still have brakes, but you will have to really push hard and might even have to pump them up in order for them to stop the car.
How do you know when the Master Cylinder is going out?
Start the engine. Place you foot on the brake pedal, and press fairly hard and hold the pedal down. If the pedal very slowly, moves toward the floor any at all, the master cylinder is defective. Replace it immediately!!!!!
How do you know the master cylinder needs replacing?
If you can pump the brake pedal and it firms up and then while holding pressure on it the pedal slowly goes to the floor the master cylinder is bad. It may be worn to the point that it will not build any pressure. If you pump it and it holds then it is probably air in the line. Very hard brake pedal is usually the vacuum booster.
1986 s10 blazer has a hard brake pedal and you can hear air as the pedal gos down?
power booster behind master cylinder sounds like they may be the problem
How do you bleed your Toyota landcruiser brakes?
make sure master cylinder stays full, have a helper pump up brake pedal until hard have them hold it down, open bleeder fiting on the wheel farthest from master cylinder close fiting before releasing brake pedal repeat unitil no air comes out, repeat for each wheel, farthest to closest to master cylinder.
Chevrolet 1978 truck c10 ..Why pedal brake so hard?
Either the power brake booster is bad, or it don't have any vacuum going to it. That is the part that the brake master cylinder is bolted to.
When it's cold how why is my brakes hard to push down?
Sounds like you may have moisture in the brake fluid. Have your brake fluid totally replaced. Your master cylinder may also be failing. Hold steady pressure on the brake pedal. If it very slowly goes down replace the master cylinder.
How hard is it and How do you change master brake cylinder on 1999 Chevrolet Suburban?
The master cylinder on a 1999 suburban is pretty easy to change. Under the dash, disconnect the clutch pedal from the cylinder rod. disconnect the brake lines from the master cylinder and allow to drain into a container. Unbolt the cylinder and remove. Install the new cylinder and connect the lines and rod back up. Add new fluid, and bleed the slave cylinder to finish the installation.
What does the master and slave cylinder do for the clutch?
The master clutch cylinder is attached to the clutch pedal. When one depresses the pedal hydraulic fluid is forced from the master cylinder through the hard line to the slave cylinder. The piston in the slave cylinder is driven against the clutch linkage thereby releasing the clutch.
1991 Chevy lumina replaced back brake calipers because they were froozen bled all four brakes with engine not running brake pedal goes to floor it will stop the car?
Sounds to me like you didn't get all the air out of the system. Go get yourself four line clamps. Clamp off all four rubber brake lines and see how the pedal feels. If it is still soft you have a bad master cylinder or air in the master cylinder. If pedal is hard then remove one clamp at a time and check to see if you have pedal. If you remove a clamp and lose your brake pedal then that is where your air is. Keep on bleeding.
What problems could exist if there is a power brake booster that has a vacuum leak?
Insufficient vacuum to assist braking requirements resulting in a "hard" brake pedal. Another very common symptom can be that Brake Fluid is disappearing from the Master Cylinder, with no sign of the leakage. It can be sucked past warn seals of the Master Cylinder and through the Booster, into the engine and burned.
