Proportioning valve replacement - 1999 Lincoln Continental

Many brake proportioning valves are replaced unnecessarily, simply because the lever pivot is seized. It is possible with patience to free the pivot.

The valve is usually produced by a brake hydraulics manufacturer rather than the vehicle manufacturer and the same valve, though perhaps with a different lever fitted, might have been used on several different makes and types of vehicle. With patience an arm can be removed and replaced.

There are specialists that will repair or recondition obsolete brake parts. These usually advertise in the classic, vintage and veteran markets.

It would require some testing and experimentation but a brake proportioning valve from any similar size and weight of vehicle could probably be fitted and a suitable setting worked out.
Good luck!

it is a load proportioning valve that adjusts the proportion of brake pressure according to the load on the vehicle
best to get a new unit and replace it then bleed the air out of the brakes

You replace it. A proportioning valve is what directs the brake fluid where to go. If it malfuctions it must be replaced

Usually if the car has a valve it is mounted on the firewall. But your master cylinder has 4 connections, one for each wheel. So I doubt your car has a separate proportioning valve. You could check with the dealer to verify.

proportional valve located in the mastercylinder

1985 lincoln towncar parts will work

sometimes you can tap on the proportioning valve while someone pumps the brake if nothing breaks loose you may have to replace the valve.

bleed master cyl ,abs, and check proportioning valve, proportioning valve if stuck will stop flow to back etc

http://www.bustedjeep.com/projects/yjbrakes.asp

Check out the last paragraph, re: which proportioning valve should I use?

It says that either will work, but the YJ valve is cheaper