Skip the auto shop - Our mechanics make house calls

Q: Brake piston seized after brake pad change

asked by on

I recently attempted to change my brake pads. After i removed the caliper, I forgot that i needed a clamp to compress the piston, so i put the car back the way it was with the old pads and tried to drive off to get a clamp. The brake has a horrible grind now and the brake seems semi-engaged. I could not leave my driveway. I took it apart again, bled the brake a pit, it became slightly looser, but still too engaged to drive anywhere. How can i at least return it to the way it was?
My car has an automatic transmission.

A: Was this the rear brakes? Many times the re...

Was this the rear brakes? Many times the rear calipers have to be turned in with a special press that turns the piston and presses the piston in at the same time. This is because the parking brake is built into the rear caliper. Often times the parking brake in the caliper gets seized up and causes the brakes to get stuck on. Unfortunately, the only way to fix this problem is to replace the caliper.

Now, if it’s the front brakes, it is possible that the sliders on the brake caliper bracket may be stuck. If they get stuck, this will cause the brakes to be stuck on. It is possible for the sliders to be taken apart and lubricated to avoid replacing the caliper.

I would recommend asking for help from one of the mechanics at YourMechanic to come to your location, run a diagnostic inspection on your brake system, and get your brakes working properly again.

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: Strange sound in the engine

There should be a vacuum coming from the oil fill hole with the engine running. This is because vacuum is created inside the engine as the piston moves downward in the cylinder. Also, you should feel vacuum when holding your...

Q: partially engaged brakes

You will need to jack up the front wheels and see if the tires will turn freely. If both front wheels are binding then you should try to loosen the brake lines that connect to the master cylinder to see...

Q: Can you put vortec heads on 86 350 with high top pistons

Hello. The Vortec heads should bolt up to the 86 350 block, however, they will require a different manifold and engine management system. In regards to the high top pistons, I would calculate the compression ratio that should theoretically be...

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...
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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control 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...