1997 Chevrolet K1500 Logo
Frank Steinsiek Posted on Aug 11, 2013
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Brake pedal goes to the floor. No leaks found, replaced the master cylinder, no difference. ABS?

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Tracy

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  • Master 581 Answers
  • Posted on Aug 11, 2013
Tracy
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Joined: Aug 09, 2013
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You need to bench bleed the master cylinder more in likely . http://www.ehow.com/video_2327999_bench-bleed-master-cylinder.html

5 Related Answers

Anonymous

  • 1 Answer
  • Posted on Nov 24, 2008

SOURCE: 94 S-10 Chev Brake problem

This is an easy fix un plug the abs sensor from spindle abs light will come on but the brakes will work only abs will not

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Anonymous

  • 8 Answers
  • Posted on May 01, 2009

SOURCE: brake pedal goes to floor

there is still air in your hydraulic lines somewhere bleed the system with a pressurised power bleeder and you will get instant results

Curt Downs

  • 1779 Answers
  • Posted on Apr 12, 2009

SOURCE: 1998 chevy s10- brake pedal goes to the floor-

Did you put fresh fluid in the master cylinder? I really think you still have air in the lines. To bleed manually, start with the bleeder the greatest distance from the master cylinder, car running, helper pushing down about half way on brake pedal and releasing 3 times, on 3rd time, holding pedal down to half way depressed point while you open the bleeder valve. Repeat until you are sure all air has been flushed out. Check master cyl reservoir level often, because if it gets low and you **** air into the system, you have to start all over again. Go to wheel next greatest distance from master cyl, repeat above, working your way to wheel closest to master cyl last.

Anonymous

  • 113 Answers
  • Posted on Jul 20, 2009

SOURCE: Brake Pedal goes to the floor in my 1990 Chevy C1500 Scottsdale

do you have a self bleeder kit? first off, you have to bleed the master cyl back into its self and the combination valve before you go to the wheels. when you do that, I think you will find that you have air in the lines. disconnect both brake lines from the master cyl and put the bleeder kit fittings on the master cyl, then put the rubber tubing with the kit on the fittings and submerge it in the brake reservoir. make sure its full. then pump the pedal until you get a hard pedal. if that is the case, reconnect the lines to the master, then have an assistant pump up the brake pedal with the engine off, and bleed the combination valve which should be connected to the master by steel tubing. pump it up, then hold it down, and crack the fittings loose, one at a time until the pedal goes about half way down, but do not release the brake pedal until the line is tight again, otherwise you will **** air in the lines. after you do all that, go to the farthest caliper or wheel cylynder from the master and bleed that with the same technique,and dont release the pedal until you close the bleeder screw. unless you have a major prob, this will work.

Anonymous

  • 53 Answers
  • Posted on Oct 09, 2009

SOURCE: 97 Chevy Silverado Brake Problem

start bleding again from left to rigt all the way around.

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Related Questions:

0helpful
1answer

580m brake pedal goes to the floor. No brake on right side.No visible hydraulicleak. Where do I look for problem?

Internal master cylinder leak. Piston seals in the master cylinder are the most probable cause. Master cylinder needs replacement if no other leaks found.
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Abs brake system

Best case scenario bad vacuum pressure to the brake booster. Worst case bad abs control module or valve body/motor the abs system works by add and removing hydraulic pressure through valves and electric motor. Try using block off plugs at the master cylinder( remove lines plug outlets at master cylinder) check if brake pedal position and pressure is good(if there is no change problem is master cylinder or brake booster/ vacuum) if plugging at master cylinder solved issue repeat procedure at abs valve body after reinstalling lines from master cylinder if your problem returns your issue is in the abs valve body if plugging at the abs solves problem reconnect at the valve body bleed each line one by one testing between each line until you find the problem
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BRAKES BLED PEDAL GOES TO FLOOR WHEN STARTED

if a master cylinder is bad and you are sure you have all the air out and no leaks.pedal will go to floor , running or not. if booster is bad it will cause a hard pedal. but if master cylinder is bad it will turn on a brake light on dash if it works. make sure the wheel cylinders are not leaking. I beleive that the master cylinder is bad, or you have a leak somewhere. If the master cylinder is functioning properly, the brake pedal will depress to a certain depth and no further.
2helpful
3answers

Have a 1993 dodge Caravan SE. Purchased it from a man which converted it from ABS to hydraulics. I didn't know it had brake problems till i got it running. He put on a 3 outlet 2 inlet proportional...

if something goes wrong with abs the brake system it reverts back to standard system!! If you can pump brake pedal up and hold it and start engine and it drops thats normal.You say low pedal if you go 15mph on road and check where pedal is when brakes apply.Power brakes will push aLMost to floor while stopped but while moveing you`ll almost go to slide or will go into slide if pedal is pushed to floor.Get on some gravel at 10 mph and hit brakes to a complete stop get out and check to see if all 4 tires slid or 2 front or only 2 rear. this will get you closer to problem good luck.
0helpful
1answer

97 siverado brake pedal goes to floor and theres no air in line no leak new master went motor its not running brakes feel ok as soon as i start engine pedal goes down

Does your truck have ABS? If so you may have a bad brake
pressure modulator for the abs. Its the big box by the Master that says Kelsey-Hayes on it. You can pick up the complete unit from a salvage yard at a pretty reasonable price.

I also found this on another site. I know you said that you blead the Master but check this information out. The bleeding of a new Master Cylinder is very important to get it exactly right.
http://www.ehow.com/how_4508156_bench-bleed-master-cylinder-chevy.html
0helpful
2answers

Brake pedal goes to the floor

possible leak in brake system. if not then you have a bad master cylinder. have to replace it.
0helpful
1answer

Brake pedal goes too far to the floor on initial application, pumping brings the pedal up, bled several times

Sounds like an internal leak in the master cylinder, an external brake fluid leak (such as a leaking brake line), or extreme misadjustment or binding of the calipers or drums. Any could be the case, and you can eliminate the last 2 rather easily. Do you see any sign of fluid coming from any of the brake lines? If not, move to adjustments. Check the calipers for bound up caliper pins and if equiped with rear drum brakes, the adjustment and condition of the rear shoes. After that, go right for the throat and replace the master cylinder. Be sure to bench bleed it before you install it, and if you have ABS, make sure you also bleed the ABS system, OR if you can't bleed the ABS system have the new master cylinder ready to install, and remove the brake lines as quickly as possible from the old master and have a friend hold thier fingers over the ends of the lines. I do this quite a bit at my shop, and it's VERY rare that I actualy need to bleed the ABS after replacing a master cylinder if little to no air gets in the brake lines.
1helpful
2answers

94 S-10 Chev Brake problem

This is an easy fix un plug the abs sensor from spindle abs light will come on but the brakes will work only abs will not
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