Skip the auto shop - Our mechanics make house calls

Q: Brake pedal going straight to the floor

asked by on

My brake pedal went straight to the floor as I tried to stop. I checked the fluid and it was full.

A: Hello. The brake pedal going to the floor i...

Hello. The brake pedal going to the floor is a common symptom of a faulty master cylinder. The master cylinder will usually fail due to an internal or an external leak. In your case I believe the leak is internal because generally, internal leaks are extremely slowly and the fluid level will drop very gradually. I suggest having the brake system examined by a certified technician. Being that your vehicle can not safely be driven on the road with faulty brakes, I believe you may benefit from a mobile mechanic service such as YourMechanic.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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: Multiple car problems

Hello. It sounds like you have a bit of a complex issue going on. The Aveo has a problem with the ignition switch that can cause strange issues like the ones you have described. That would be where I would...

Q: All of a sudden, all of my dashboard lights came on and loss power to my window and all gauges. The truck says it's in reveres the whole time.

Hello. The first thing to check of course is for blown fuses. Given the sudden nature of the failure, check for cut or damaged instrument panel wiring that might have shorted out as well, especially a ground wire. Instrument cluster...

Q: The brakes are spongy while the car is running but the pedal is normal when it's off

The brake pedal becoming hard to push while the engine is off is a sure sign of a normal brake booster and one way check valve. Make sure there is no air in the brake system. It sounds like you...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...