As you press the brake pedal a valve in the servo opens to allow the vacuum to pull against the diaphragm in the servo to assist you.
2004 expedition brake pedal goes to floor.
The same problem exists it will run fine for about 3 to 4 days and then the same problem.
Either the brake master has a small internal leak or the abs hydraulic control unit is allowing fluid to pass by.
I have had other brake work done in between rubber hoses one caliper parking brake.
Brake pedal went to all the way the floor as engine started and escaping air type sound heard.
This brake failure on the 2004 expedition is a really bad problem.
I have an 07 ford expedition el brake pedal goes to the floor.
A brake pedal that feels mushy spongy or that slowly sinks to the floor when depressed can be best described as brake pedal sink.
Most repair shops offer free brake inspections.
You can pump them up and get it to hold to stop but if stop using them for any duration of time the pedal will go right to the floor on the first pump.
If the brakes were loosing vacuum.
It is most likely the master do not see many abs units allowing blow by.
Reasons your brake pedal goes to the floor.
If you hit your ford f 150 or super duty s brake pedal and it goes to the floor stop the vehicle and don t drive it until you find a solution to this problem.
So i tested it today after 2 years and it pushes in a distance then stops like i think it ought to doesnt go to floor.
Presumably it is putting the brakes on when this happens.
2005 ford e150 with a brake pedal that slowly goes to the floor.
Brakes still go to the.
I kind of ignored it even though it made me nervous.
1 leak from brake line or brake caliper.
Technically there are two main causes that would make the brake pedal sink all the way to the floor.
The master cylinder has been changed and system bleed by the ford dealership.
One of the reasons is the brake system loses pressure from an external brake fluid leak.
Some model ford vehicles such as the e150 and f150 have a test port on the abs pump that can.
If your brake pedal sinks towards the floor when you are stopped while your foot is on the brake or does not feel as firm when the brakes are applied this could indicate you are having some sort of trouble with.
The pedal would get rock hard the brakes would still work but you would have to push very hard.
If a valve is stuck open it will keep sucking until the pedal goes to the floor and will only release once the engine has stopped.
I could push the pedal right to the floor.
