Rear Brakes - Ford Freestyle

Question :

I replaced the brakes and rotors on my 2005 AWD freestyle now the pedal goes to the floor before i stop unless i pump the pedal

Optional Information: 2005 Ford freestyle 3.0

Already Tried: unplugging the abs computer to reset the computer and setting and releasing the emergency brake

Answer:

You have air in the system and will need to have them bled. This is the only reason for the pedal to be able to pump up and hold pressure. If you pump it up and the pedal slowly drifts to the floor while holding foot on pedal then your master cylinder needs to be replaced.