Q: Sinking brake pedal in an O1 Lincoln Town Car

asked by on

I have an O1 Lincoln Town Car with a sinking brake pedal. I've changed the brake master cylinder but nothing changed. What can I do?

Of course, with the sinking brake pedal, you’d want to start with the most logical suspect - a brake fluid leak. Pull the tires off and see if anything’s leaking. Look for the dripping fluid. If you don’t find anything leaking, you can change your brake master cylinder.

Here’s another test you can do. Have the engine turned off and hit the brake pedal. If you hit the brake pedal and it is hard as a rock, and you start it up and it sinks, you need a new brake booster. If it’s not a bad brake booster, it could be the ABS system going down. They are super expensive so you want to pray that it’s not that going on. I recommend having the entire brake system checked by a professional so that they can pinpoint the fault. From there, they will be able to make any of the needed repairs to get your car back on the road.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Sinking brake pedal in an O1 Lincoln Town Car

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Brakes spongy after booster and master cylinder replacement

Hello. You need to double check the installation since you may have put the brake booster rod on the brake pedal wrong causing binding of the brake switch and causing the system to not bleed correctly. Also make sure the...

Q: Clunking noise in front end when you hit a bump

This may be a sign of worn out control arm bushings. Control arm bushings are an important part of vehicle suspension systems. Bushings are made of rubber which separates the faces of two objects while allowing a certain amount of...

Q: Replaced master cylinder and brakes still going to the floor and not working. Bed both master cylinders and each wheel.

If your vehicle has ABS brakes, it is possible that there is an air bubble in the ABS system. Many vehicles require a special bleeding procedure for vehicles with ABS. This will require you to do the bleeding in a...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...