I got my Master Cylinder replaced under the 2013-2014 Ecoboost recall #16V345000

Ever since, the brake pedal has been "squishy", resulting in an extended breaking distance. Dealer has bled the brakes several times to no avail. They now believe the issue is a bad new Master Cylinder, and have a new one on order.

Has anybody else encountered any issues with their replacement Master Cylinder?

 

On mine, the braking power is the same but with the new master cylinder there is a click sensation from the brake pedal when initially pressed that wasn't there before. I am told that is an aspect of the updated part they installed and have been living with it.

 

no issues here after replacement. actually feels slightly firmer.

 

I agree that if anything, mine was just barely more firm, but that could just be my imagination. No issues here.

 

Maybe they didn't do an electronic service bleed, you can bleed brakes all day long the old fashion way and never get the air out of the HCU, that must be done with IDS and I think Forscan can do it as well.
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That was my thought, either air or debris in the HCU, as it feels like there is little to no rear brakes.

The tech insisted that he bled the brakes using the procedure in the service manual. I will verify the procedure with him when I pick up the truck.

 

The way it's supposed to be done is regular bleed, electronic service bleed followed by another regular bleed. Sometimes it takes doing the entire procedure more than once.
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Got the truck back, looks like replacing the master cylinder did the trick. No more "squishy" brakes. Must have gotten a dud!

 

It happens, recently we had a truck in our shop kicking our collective ***** for 2 weeks due to a defective fuel injector.
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