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david craig
david craig, Auto Mechanic
Category: Car
Satisfied Customers: 3783
Experience:  owner/mechanic at 3D Automotive
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Ford Crown Brake Pedal is Dropping.

Customer Question

2006 Ford Crown Victoria's brake pedal is dropping. I have replaced the master cylinder, booster, bled the brakes twice. Recently I also replaced the brake light switch and the pedal came back up.

The brake fluid level is up and I flushed the system.

What is the problem and what can be done?

Submitted: 11 months ago.
Category: Car
Expert:  david craig replied 11 months ago.

Hi Im David, thanks for visiting the site.

So one day you get in your vehicle and the brake pedal goes to the floor or how did this come about?

Customer: replied 11 months ago.
dropped progressively
Expert:  david craig replied 11 months ago.

Did you bench bleed the master before installing?

Customer: replied 11 months ago.

No, I did not.

This is an unusual and intermittent problem. Repairs are done, there is an improvement and then it returns

Expert:  david craig replied 11 months ago.

Did you manually bleed the brakes?

Customer: replied 11 months ago.
Expert:  david craig replied 11 months ago.

With or without the engine running?

it takes a lot more than 2 times bleeding the brakes to get it done correctly. Sometimes it can take 5,6 or 6 times.

Customer: replied 11 months ago.
each part replacement it would work better and then return
Expert:  david craig replied 11 months ago.

Bleed them again with the engine running.

Customer: replied 11 months ago.
this is a cab company
many of these same vehicles are serviced
Customer: replied 11 months ago.
the one notable exception was when the brake light switch was replaced
the brake pedal went up significantly