Skip the auto shop - Our mechanics make house calls

Q: Brakes going to the floor

asked by on

The brakes were going to the floor no visible leaks so I changed the master cylinder, bleeded the brakes and the brakes are still going to the floor

My car has 176 miles.
My car has an automatic transmission.

A: Hi there. From the description you have pro...

Hi there. From the description you have provided, your vehicle brake pedal going to the floor before and after the brake master cylinder replacement, is a safety concern. I recommend not driving your vehicle until, this problem is resolved. Your safety is priority one. Assuming, you followed procedure replacing the brake master cylinder, bench bled, and properly bled the system. It could be, the ABS (anti-lock brake system) electo-hydraulic modulator allowing brake fluid to bypass internally, resulting in the brake pedal going to the floor. I recommend having your vehicle’s brakes(https://www.yourmechanic.com/services/brake-safety-inspection) be diagnosed and repaired by a certified technician, such as one from 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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: New brakes

On a relatively new car such as yours, the need for "brake work" is typically determined based on a visual check of "depth of remaining pad friction material". Brake pads are still generally good so long as there is at...

Q: Brake pedal going to floor.

I strongly recommend this car not be driven before this problem is addressed as a safety concern. If the pedal goes down to the floor it means one of two things, either air has become trapped in the sealed system...

Q: Slight knocking while driving

If your car has been leaking oil for an extended period and you hear knocking, it's possible that an engine bearing has either spun, or is about to spin in its bore. After fixing the oil leak, I would recommend...

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...