Here ya’ go!
CSA
My long journey into the world of master cylinders and brake boosters has come to an end. Ford replaced the booster under the extended warranty that you mentioned but the brakes were still soft. They claimed the master cylinder was bad so I took the car back to the shop that replaced it and had them take a look. They told me that it was their fault, they didn’t bleed the brake lines correctly ( something about the car needed to beer hooked up to the computer while they did it?). So they did another bleed and all seems to be well again!
Translation = they didn’t perform the automated brake bleed with the scanner
At least they fessed up and made things right
You’d think the Ford service would have bled the system after the brake booster replacement to correct the spongy pedal feel before releasing the car to the customer.
A hard brake pedal should have implicated the booster system and not the master cylinder in the first place; it was likely a unnecessary replacement of that since the classic symptom is a sinking pedal and not a hard one.
The original post identified a pedal going to the floor. Then after the master was replaced, a hard pedal. I believe Mustangman saw through the complaint to suggest the booster which Ford had to replace. I’m not sure why the dealer would also bleed the brakes for a booster replacement and likely would not have been part of the recall procedure. Now had the OP originally gone to the Ford dealer for diagnosis of the brake problem, I can see them doing the additional work for a fee in addition to the free booster.