Skip the auto shop - Our mechanics make house calls

Q: Brakes starting locking up, had car in shop a week, flushed system, replaced rear calipers, master cylinder, and the shop cannot fix the problem.

asked by on

Car started locking up on brakes, pedal gets stiff and car will barely move due to brake pressure, replaced master cylinder and worked fine, replaced driver rear rotor and pads, started acting up after. shop said it was bad caliper, replaced both rear calipers and issue remains, shop flushed system and issue still remains. Advised shop to look into ABS Module or Master Cylinder. Would that be correct thinking?

My car has 220000 miles.
My car has an automatic transmission.

Check the combination valve on the brake system and see if it is squirting out brake fluid on the line on the return side when loosing the line. Then check the brakes and see if they relaxed. If it does, then there could be an issue with the ABS controller. If the fluid does not come out, then the combination valve needs replaced. If you need further assistance with your brakes not releasing, then seek out a professional, such as one from Your Mechanic, to help 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!
  • Home
  • Questions
  • Brakes starting locking up, had car in shop a week, flushed system, replaced rear calipers, master cylinder, and the shop cannot fix the problem.

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: Engine stalls when the brakes are applied

Hello. From what you describe it would appear that your vehicle may be experiencing possible engine management or transmission issues. The symptoms you describe can commonly be caused by faulty idle air control valve. The idle air control valve is...

Q: What happened too my coolant

The "rain" smell you noticed is caused by burning radiator coolant. Usually if the coolant is spraying everywhere, there are two parts that might be broken; a radiator hose (or the connection to a radiator fitting) or a small hole...

Q: ABS light coming on

It is very possible that you may have a wheel speed sensor that is going bad. That is the most common problem to turn the ABS light on. There could also be some damaged wiring but it also may be...

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...
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...
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...