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I have a 2002 Buick Century without solutely no brakes on no brake fluid leaks on the pedal just goes to her to the floor and doesn't pump up at all

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  • 76 Answers

Master brake cylinder is gone. Won't heal itself better change it

Posted on Dec 14, 2014

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Posted on Jan 02, 2017

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SOURCE: brake pedal goes all the to the floor. can not

Check the reservoir to be sure the fluid is full. If not, top it off and try it again. If there's still trouble building pressure, pump the brakes a bunch of times, and then check around each wheel for fluid on the ground. If you see none, it's possible that you have a break in the line somewhere through the chassis and that the fluid is leaking out inside. If you see no evidence of leakage, and the reservoir is still full, you need a new brake master cylinder - what will have happened is that the diaphragm around the plunger inside the master cylinder (which moves through the cylinder when you push the pedal, and forces fluid out to the wheels) has a hole or tear in it, so instead of pushing the fluid out to the brakes, the plunger simply moves through the fluid. It never builds pressure, and your brakes don't work.

Posted on Dec 22, 2009

Testimonial: "thanks for the info. very helpful. harry Newman"

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SOURCE: brakes

Since there is no loss of fluid we can rule out any leaks. A poor booster would make you apply the brake much harder to stop. So somehow you are not developing the necessary pressure for the brakes to function. The pressure is developed by the master cylinder seals. You can get a rebuild kit or a rebuilt master cylinder but the real pain is bench bleeding the new one. Luck to you.

Posted on Jul 18, 2008

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SOURCE: 2005 fx f150 brake pedal

it sounds like you need to bleed the brake lines. it's a two person job, and at least one has to know how to do this. if not you'll have to take it to a brake shop. it also could be a bad brake booster, but your car isn't that old so i don't think it's that.

Posted on Nov 28, 2008

  • 106 Answers

SOURCE: 94 buick brakes

There could be 2 reasons that the pedal would go to the floor.1 -there is air in the system.If no one has taken a line loose then it will be #2 -the brake master cylinder has gone bad and will need to be replaced.Ther will be directions on how to do this proporely with the replacement unit.if you need further assistance let me know.

Posted on Mar 08, 2009

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SOURCE: Brake pedal goes down to floor. Putting brake fluid doesn't solve problem. Vehicle must coast to a complete stop.

First look for obvious leaks under the vehicle, especially the inside area of each wheel... If you see fluid, you have either a blown cylinder seal or a bad line (check the rubber hoses to the front and back brakes too) Repair the offending part and bleed the air out of the system... (remember to clean pads or shoes if they have fluid on them)... If you see no hint of leakage anywhere, then suspect the master cylinder... if you remove the master cylinder, check and make sure that it didn't leak fluid into the brake booster diaphragm (Brake fluid will destroy the booster)... as in any repair when you open the system (lose fluid), you will need to bleed out the air to restore function... hope this helps...;-)

Posted on May 04, 2009

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3 Answers

Are there vacuum hose on the brakes hydraulic system?

NO. the vacuum is used to make the brake pedal easy to push, power brakes. the pedal would be hard without vacuum, that is why the pedal gets hard with the key off and engine not running. the problem you are having is more of a hydraulic problem.
Have the brakes checked asap. the brake system may have a leak causing the pedal to go low. check the fluid level and if it is low or empty then there is a problem, could be a rotted brake line leaking or a wheel cylinder leaking.

Dec 07, 2012 | 1997 Ford Probe

1 Answer

1994 buick century brakes went out fluid leaking from rear

Brake lines by rear door on drivers side are a common failure point. lines under door failing can cause a total brake failure. Just replace and bleed the lines.

May 31, 2012 | 1994 Buick Century

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1999 buick century brake pedal goes to floor-put new master cylinder on and blead both brake lines and master cylinder and pedal still goes to floor

Sounds like you may have a hydraulic leak somewhere. Check the rear wheel cylinders and front brake hoses going to the calipers.

Jan 26, 2012 | 1999 Buick Century

2 Answers

94 buick century brake pedal goes to floor and I have no brakes

ck the brake fluid level. if its out, then fill it up, pump the pedal and find the leak.

Sep 07, 2011 | Buick Century Cars & Trucks

1 Answer

How do I bleed the brakes on a 98 buick century

start at the closest wheel to the brake master cylinder, you will need someone to pump the brake pedal to build up pressure then hold it down while you release the bleed nipple on the wheel brake cylinder then push the pedal to the floor to release the air & keep it down until you tighten the bleed screw then release the pedal & repeat the process on each wheel from front to back making shore that all the air is out of the lines DO NOT let the brake master run out of brake fluid ( keep topping it up)......hope this helps.....cheers.

Aug 17, 2011 | 1998 Buick Century

1 Answer

No Brakes, Brake fluid totally dry

Might be a corroded brake line, bad brake hose or brake cylinder. To narrow the problem fill out the master cylinder bottle with brake fluid, pump the brake pedal while another person is inspecting from outside to find the leak. Good luck.

Oct 31, 2010 | 2000 Buick Century

2 Answers

A few seconds after brakes are applied the pedal starts to fall to the floor. When I pump the brake pedal I here a hissing noise coming from the vacuum booster.

you have two problems here, your master cylinder has a leaking seal, the low pedal is resault, the power brake booster rubber diaphram is damaged and leaking from the brake fluid that is getting into it from the master cylinder, these are sold as a unit that has been rebuilt.

Sep 28, 2009 | 2001 Buick Century

2 Answers

94 buick brakes

Sounds like a bad master cylinder. Possibly a bad power booster with the leak you are describing. Check for leaks in lines/hoses/wheel cylinders as well.

Mar 07, 2009 | 1994 Buick LeSabre

1 Answer


is the brake pedal soft or go to the floor? you could have a rusted out or pinched metal brake line, or the rubber brake hose could be clogged, you must trace the hose and metal line back to the master and look for leaks or rust, then unscrew the line from the master and make sure you get fluid there while depressing the pedal, and just keep disconnecting down the line until you get fluid to the caliper be sure your bleeder screw is not just clogged with rust remove it all the way and depress the pedal to see if you have fluid there please rate -jeff

Jul 28, 2008 | 1998 Buick Century

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