Skip the auto shop - Our mechanics make house calls

Q: Strange braking issue.

asked by on

I recently replaced the master cylinder and brake booster (http://www.getdiscbrakes.com/j84315672) and brought the vehicle to a mechanic to replace part of the brake lines. The mechanic also claims he bled the system. The problem is when I step on the brake pedal there is almost no stopping power until the brake pedal is almost to the floor at which point the brakes engage and the car comes to a screeching halt. The problem is significant enough that the vehicle is not safe to drive. I believe the problem may be air in the lines but don't understand why there would be such extreme stopping power when the brakes finally engage. Is there something else I should be looking at also?

Note - except for the parts mentioned above, the entire brake system is all original with front and rear drum brakes.

My car has 88000 miles.
My car has an automatic transmission.

Hello, based off the information (1967) not sure if that is the correct year. For the year of 1967 it would be an air issue and possible brake (pads or shoes) surface (wear or contaminated) such as oil on brake linings. On a current year model, air in the system would create the same condition. To remove air out of this system requires tools and a scanner that must be connected to the vehicle ABS (anti-lock system) module. The module must be active when bleeding the air out of the system. If you’d like, a certified YourMechanic Technician can come to your location to perform a brake inspection.

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: 2007 Silverado - "Reduced Engine Power"

Hi there: Without being there, it's difficult to give you an idea as to what might be causing the 'chirping' noise or the Reduced Engine Power light. However, anytime you have an error or warning light come on and you...

Q: Car won't start, but is turning over

If you are getting spark and fuel to the engine then you may have a timing issue or compression issue. First bring the engine number one cylinder up on compression stroke and then recheck the distributor is not indexed wrong....

Q: Brake pedal hit the floor. Very hard to stop car.

First thing is you do not have any brakes and should not attempt to drive the vehicle until the brakes are repaired. The brake pedal is going to the floor due to a major brake fluid leak from the left...

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...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...