Skip the auto shop - Our mechanics make house calls

Q: bleeding brakes but no pressure

asked by on

just changed pads and rear brake lines.Trying to bleed them but not getting any pedal pressure at all.

My car has 125000 miles.
My car has an automatic transmission.

A: Hello. This will occur if you allowed the b...

Hello. This will occur if you allowed the brake fluid to get low enough during the repair and allowed air into the system. Once this occurs the only way to get the air out of the ABS module is by bleeding it while using a scan tool. This procedure allows you to open the valves to get trapped air out. If this was occurring before the work, then it may just be a failing master cylinder. If you are going to have this repaired, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose your brakes for you.

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: Car died while driving so I replaced the alternator and battery and car won't attempt to turn over. What else could it be?

The initial failure was likely caused by a sudden fuel system (e.g., failed fuel pump) or electrical (including ignition) faiure. Prior to performing diagnostics be sure you have a fully charged battery that passes a load test. Then, confirm that...

Q: What causes brake fluid leaks?

There are many factors that can lead to brake fluid leaks. Let’s begin at the start of the system, with the master cylinder. This is a sealed unit with a reservoir to hold the brake fluid needed to operate...

Q: How do I adjust the rearview mirror?

Every time you drive, you should adjust the rearview mirror. The rearview mirror is an important safety feature that allows you to see what vehicles are behind you. To adjust the rearview mirror, use your hand to change the angle...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...