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james owens Posted on Nov 11, 2017
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1998 ford expedition booster new master cylinder new all disc break new break peddle goes to floor after bleeding hole system

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Rigger DeBusk

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  • Ford Master 1,811 Answers
  • Posted on Nov 11, 2017
Rigger DeBusk
Ford Master
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Joined: Aug 28, 2012
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You can bleed the system all you want and STILL have the pedal go to floor unless the master cylinder was bench bled in a vice BEFORE it was put on the vehicle. ALWAYS bench bleed a master cylinder before you put it in service. If you don't, you'll never get the pedal off the floor.

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

  • 145 Answers
  • Posted on Dec 29, 2010

SOURCE: I HAVE A 95 F250

The slave cylinder is the next thing I'd replace.

Anonymous

  • 45 Answers
  • Posted on Dec 29, 2010

SOURCE: I HAVE A 95 F250

You need to check wheel cylinders, the only way that the brake peddle will go to the floor like that is if there is a lose of fluid pressure somewhere .

Anonymous

  • 249 Answers
  • Posted on Feb 02, 2011

SOURCE: brake peddle goes all the way to the floor. brake

first make sure there are no brake fluid leaks, sometimes the steel lines get rotted and start leaking. to test the booster with the engine off pump brake pedal about 10 - 12 times on the last pump hold the brake pedal down and start the car if the booster is good the pedal will drop alittle.

Anonymous

  • 270 Answers
  • Posted on Aug 05, 2011

SOURCE: put in a new master

have you replaced the front and rear brake pads (for older vehicles, rear wheels use brake shoes instead of brake pads). if yes, check your calipers. completely remove it from your tire and have it cleaned.
if the problem still persists, then its time to replace your hydrovac

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0helpful
1answer

I am trying to bleed brakes on dodge Durango. Just bleed the master cylinder and the brakes line at each wheel still have no brakes. Suggestions?

Is the master cylinder new? Dose the peddle go all the way to floor or stay up. If it goes to the floor will it get hard if you pump the break peddle?
0helpful
1answer

My break pedal goes all the way to the floor . I replaced brake rotors master cylinder, and Break booster. I had to bleed the brake and still pedal still goes to the floor

You still have air in the system.(not bled properly) If you let the Master cylinder drop down to nothing then you need to bench bleed that before bleeding the lines again.
0helpful
1answer

I Got a 2000 ford expedition i replace front brake pads, calipers brake pedal goes all the way to the floor I replace the booster and master cylinder and the problem don't go away

I would start by bleeding the air out of the brake system starting at the longest line first. Check for fluid in the master cylinder . IF you have problems bleeding then undo the lines at the master cylinder and using your fingers a valves bleed the air out and prime the master cylinder first then bleed the system
0helpful
2answers

I have a 1998 Toyota 4Runner. The brakes failed when my son was driving it. We replaced the Booster and Master Cyl, and bled the brakes several times. We checked the ABS proportioning valve and have fluid...

When I have had trouble bleeding systems...I have over come it by reverse bleeding. You buy a pump on container put it on the last bleed screw and flush the fluid back wards up out the resavor
0helpful
1answer

No leaks on the hose, but leaks from the booster that think that looks like a black ball, and no pressure break peddle goes all the way down..... what would i have to buy and change and can i do the work...

if the pedal is going all the way down I doubt its the booster but instead the master cylinder, the leak you see is it where the master cylinder connects to the booster ? a bad booster would mean you have no pedal assist,, which would feel like trying to stop a freight train with your brake pedal, if you know about brake systems then you could probably change the master cylinder, all it is for the swap is remove the old and install the new, the trick is in knowing how to bleed the system, and bench bleed the master cylinder,, and you don't want to be messing with the brakes if your not sure how to do this repair,
0helpful
1answer

1989 chevy breaks i have replaced the entire break system on my truck except for properiation valve and i get massave air comming up into master cylnder back bowl have bleed many times but no peddle when...

I am fairly certain you have a bad master cylinder. I had a chevy truck which emptied
the back bowl completely and the cause of this was a failed seal on the rear of the
master cylinder. The fluid was sucked into the engine through the power booster and
burned off while driving. If the back bowl for the rear brakes is empty, then this may
be the cause.
0helpful
1answer

We replaced pads& callipers, bleed lines/ brake peddle goes to floor.brakes work but peddle still goes to floor.help!!!!!!!!!!!!

Check the vacuum hose going to the brake booster mounted on the firewall in front of the driver in the engine compartment. If that is intact and connected with no holes then the problem is the Master Cylinder.
0helpful
1answer

I HAVE A 95 F250 AND THE BRAKE PEDAL GOES TO THE FLOOR. I HAVE REPLACED THE MASTER CYLINDER TWICE AFTER BENCH BLEEDING, REPLACED THE BRAKE BOOSTER . BLED THE SYSTEM 3 TIMES AND THE BRAKE PEDAL STILL GOES...

You need to check wheel cylinders, the only way that the brake peddle will go to the floor like that is if there is a lose of fluid pressure somewhere .
0helpful
2answers

98 wrangler - brake pedal goes all the way to the floor. The master cylinder and all brake lines are free of leaks. I'm not losing any brake fluid anywhere. I replaced the booster that is attached to the...

You changed the master cylinder and vacuum booster and have no leaks anywhere, but did you bleed the entire brake system after you did this work? A little bit of air in any of the lines will make the brakes ineffective.
3helpful
2answers

Brake pedal still goes to floor 2000 GMC Jimmy

It's very possible to be the master cylinder, the o-rings on the piston could be worn, letting the fluid seep back through instead of getting full pressure through the lines. Could also be the brake booster.
Try changing the master cylinder first, which is cheaper and easier, and see if there is a difference, you'll need to bleed the brakes again.
To check the booster,
With the engine off, pump the brakes until the pedal is hard, then hold pressure on the brake pedal and listen for air escaping, or the pedal goes slowly to the floor, Do that after the master cylinder has been changed, at least that will be eliminated.
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