Comments on: 4 Symptoms of a Bad Brake Master Cylinder (and Replacement Cost)

By: Chip

Chip — Mon, 18 Jul 2022 07:51:48 +0000

In reply to Bill. Where is the proportionary valve ??

By: Fernando Martinez

Fernando Martinez — Tue, 25 May 2021 01:32:48 +0000

I had the same problem and when my car was cooled down the breaking system worked fine. I replaced the brake fluid rubber hoses at the front because they were old and soft. Hoses were collapsing on the inside liner when hot preventing fluid to run through them and locking the braking system. No other parts had to be changed and the problem was fixed.

By: Aja

Aja — Sat, 14 Mar 2020 14:12:06 +0000

In reply to David Pearce. I had a 89 Ford Taurus, that did the same thing, whilst I was driving on the highway!! Got rid of it.

By: Bill

Bill — Tue, 10 Mar 2020 05:14:29 +0000

Its your proportionary valve….replace it

By: David Pearce

David Pearce — Tue, 19 Mar 2019 16:28:42 +0000

Thank you for above but my problem is not mentioned. I have had all the brake parts either replaced or serviced bar the Master Cylinder on my car. The car runs freely until it gets warm and then the brakes seize solid. Even 4 bulky men and me in 1st gear would not budge her today. I have Mark 2 Ford Escort running gear on a 55 Ford prefect body. All 4 wheels were locked-both drum and disc brakes. When the system cools down all becomes free again. I have been told that there is a flow valve inside the Master Cylinder and that it can rust especially on a car that has been in store for over 4 years (as mine was). The occurrence time has become less. It now takes around a mile before she locks solid. Grateful for your thoughts please.