Skip the auto shop - Our mechanics make house calls

Q: My brake pedal goes to the ground

asked by on

I just got new brake lines and the car can stop but I have to push the pedal just about all the way down. Any idea why that is?

My car has 187000 miles.
My car has an automatic transmission.

A: The brake master cylinder has two separate ...

The brake master cylinder has two separate chambers inside it, and if one fails, then the other will work but the pedal will go down farther before the single chamber works. You need to have the brakes bled out again to see if it is another leak or air in the system. If you find you still cannot get a full pedal, then your master cylinder is damaged internally and needs to be replaced. Sometimes if the pedal goes down too far on an old master cylinder the rubber cups inside get damaged and a replacement is needed. If you need to have this looked at, a technician from YourMechanic can come to your home or office to inspect your brake system and replace your brake master cylinder if needed.

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・Save up to 30%

Get a quote

What others are asking

Q: Replaced alternator and now there's a low sounding, high pitched noise, like a jet engine whistling.

Hi and thanks for contacting YourMechanic. This can be an easy fix. The alternator may have a problem with the fan blades inside it if you got a brand new design. If you got a design with the fan located...

Q: Reverse lights not working

After replacement of both bulbs and the fuse, my next step would be the reverse light switch. Be sure to have your rear lights tested by a qualified technician before having it replaced, as it is not guaranteed to be...

Q: Can I put E85 in my truck?

The last owner may have used an aftermarket computer programmer to alter the computer to only use regular fuel and not E85. If your gas cap says your truck is E85, it should be okay and you could try running...

Related articles

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.