Q: Master cylinder issues with vehicle. Hard to stop.

asked by on

Brake pedal occasionally goes all the way to the floor and I have to pump it to stop the car. I was told it could be a master cylinder booster or the master cylinder itself.

The booster won’t make your pedal go to the floor. If you bled all the brakes, and there are no leaks, then it’s most likely the master cylinder. You can take them apart and clean them, but if the seals are too bad then you should just replace then bleed the brakes again. A mechanic from YourMechanic can do the above as well as perform a brake safety inspection if you would like.

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. Master cylinder issues with vehicle. Hard to stop.

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: My car makes a really annoying noise and sometimes dies right after

Hi there. From the description you have provided your vehicle's moaning noise and intermittent stalling problem could be any number of things. It could be a failed alternator diode making the moaning noise and affecting the idle. A failed...

Q: Scan vehicle Code P0430 Cataylic system efficiency below threshold bank 2

The code is meant to indicate your catalytic converter is not performing up to par with the EPA (environmental protection agency) standards. Your car uses the oxygen sensors to monitor the catalytic converter (cat) efficiency. There is an O2 sensor...

Q: I need to diagram to 2000 Oldsmobile Intrigue the diagram for a serpentine belt replacement

Here is a great diagram for your serpentine belt routing.

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.