Question about 2008 Ford Expedition

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08 expedition new m/c still pedal goes to floor

Just put new mc bled it then installed but pedal still goes to floor

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2 Answers

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  • Ford Master
  • 14,380 Answers

What'a mc?

Posted on Jan 21, 2013

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Don't know how you knew the master cylinder needed
to be, or why it was replaced

They don't fail as often as you hear about reading this
type of web site

If you had braking issues & a fairly decent brake pedal
before new parts went on,then the system wasn't bleed correctly.

I never bench bleed any master cylinder

As you walk it to the vehicle all the fluid runs out,
so why bother,just bleed all 4 corners & your done

Posted on Jan 21, 2013

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Posted on Jan 02, 2017

  • 65 Answers

SOURCE: 2005 f150 spongy brakes

it sounds like your still not getting all the air out of your lines. it helps to have a brake bleeder but they are expensive, it also could be that the gasket inside the master cylinder is inverted even if it is a new master cylinder this could be the case, ive had four bad remanned ones in a row, before i got a good one... hope i could help

Posted on Mar 24, 2009

ndguy2481
  • 251 Answers

SOURCE: 1989 Ford F350 2 wheel drive dually 460 ci gas motor

5 Inspect Brake Fluid Type Brake fluid loss or contamination grey_line.gif 10 Inspect Master Cylinder (Brake System) Worn or leaking brake master cylinder. grey_line.gif 11 Inspect Brake Power Booster Damaged booster vacuum line/check valve, or diaphram

Posted on Dec 01, 2008

  • 1 Answer

SOURCE: pedal goes to floor on 92 F250

I would strongly recommend checking your trucks R.A.B.S. (Rear Antilock Brake System) valve . It is located on the left frame rail just under where your left foot would rest . They can leak internally and exhibit the problems you are describing (loss of pedal , with no fluid loss) .
It is highly unlikely that a power booster would cause this , as a failed booster will show itself in these ways . 1) a hissing sound when you apply the brakes (indicates a vacumm leak) 2) rough engine idle/stalling when brakes applied (also indicates a vacumm leak) or 3) No power assist (brake pedal hard to push) .
If you do discover your hydraulic problem is in your RABS valve , don't forget to bleed it ,(there is a bleeder valve on it) and the rear brakes again after you replace it .
Hope this helps
Doug

Posted on Feb 06, 2009

redbeard00
  • 957 Answers

SOURCE: just replaced master cylinder on 1990 aerostar and bled the brakes, still the pedal goes to floor and i have no brakes

Did you bench bleed the master cyl. before installing it? then when you installed the new master, did you bleed all 4 points? If yes, then check all for points for leaking caliper/s and leaking wheel cylinder/s. If the van has ABS, check the valve body for a bleeder screw and see if air bleeds out of it. If you've checked everything twice and did everything right then your new master cyl. may be defective.

Posted on Apr 29, 2009

  • 109 Answers

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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1 Answer

I have to push my brake pedal all the way to the floor for the brakes to apply


new MC. time
if no leaks.
if really really bled.
new MC
master cylinder time.

Jun 06, 2014 | 1990 Geo Prizm

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for the pedal to go to the floor there is still air in the brake system. Start again starting from the longest line bleeding each in turn to the shortest line . make sure you have adjusted up the rear brakes before bleeding as every time you press on the pedal the shoes expand right out and when you take your foot off the pedal the shoes go all the way back in. adjust them manually and do not rely on the self adjuster as it only adjusts on wheel movement

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Brake pedal goes nearly to floor front pads, calipers, brake hoses changed, rotors turned Master cylinder changed, brake booster check valve changed rear brakes checked, drums good no ridge, shoe's...


I would go with not bled correctly

The booster should hold up with a hard pedal until
you start the engine, then vacuum causes it to move
down when pressing on the brake

Sep 16, 2011 | Saturn SC Cars & Trucks

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I have to press very hard to get the brakes to work. If i pump the brake pedal the brakes seem to work better for that application, but I still have to press very hard on the pedal to get the brakes to...


I suggest replacing the master cylinder assuming that you bled the system properly. You sound competent so it seems likely that the seals in the MC might be failing. That being said the brake lines can hold a lot of air :)

Aug 23, 2010 | 1993 Toyota T100

1 Answer

I can't get my brakes to bled. I pump the brakes 3 time then hold it to the floor, loosen the cap to let air out,but pedal still goes to the floor


pump up pedal with bleeder locked 6 or 7 times slowly,hold pedal down crack bleeder pedal should sink lock up bleeder before lifting pedal repeat several times should do it also remove bleeder feom caliper to make sure its not blocked

Nov 04, 2009 | 1998 Ford Expedition

1 Answer

Nissan sentra


It does not sound like air in the system or the pedal would pump up. I would tend to lean towards the brakes may need an adjustment and also the an adjustment to the rod at the master cylinder. You were very observant in noticing a change as that. You are correct in that the pedal should not travel so far as to be near the floor, this can cause an unsafe condition. Have this problem attended to soon to be safe.

Oct 19, 2009 | 2004 Nissan Sentra

3 Answers

Just replaced master cylinder on 1990 aerostar and bled the brakes, still the pedal goes to floor and i have no brakes


Did you bench bleed the master cyl. before installing it? then when you installed the new master, did you bleed all 4 points? If yes, then check all for points for leaking caliper/s and leaking wheel cylinder/s. If the van has ABS, check the valve body for a bleeder screw and see if air bleeds out of it. If you've checked everything twice and did everything right then your new master cyl. may be defective.

Apr 29, 2009 | 1986 Ford F 250

2 Answers

2005 f150 spongy brakes


possibly new master cylinder is defective

Mar 24, 2009 | 2005 Ford F-150

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