Acura TL rear brakes sticking

[Tony]

Hey, guys

I have a braking problem i hope to get an answer for:

I took my car to a local mechanic and tried to get a diagnosis on the problem in my rear brakes.
The brake lines and rotors and pads are fine, yet there is a high pitch screetch noise.
The mechanic may think that it is the master cylinder or ABS.
The braking fluid was flushed, but the problem is still there.
When the brake pedal is depressed, the mechanic found that the oil is not released fast enough. There is a delay in the fluid movement.
When the wheel is removed and the wheel turned, there is friction, so the wheel does not turn smoothly.

Thanks!

Topic

[Lorrin Barth]

If you have dragging brakes it will make the wheel hot. Drive down a road for several miles then coast to a stop on the shoulder. Get out and feel the wheels. BE CAREFUL! They could be very hot. If they are the same temperature at the fronts then not dragging brakes. Don’t get hit, watch for traffic. If hot usually the cause is stuck caliper pins. So, service the brakes or have someone do this. Eric has video.

I had a rear brake that would screech each time I applied the brakes. I pulled the pads and found the grease I had placed between the pad and the piston had dried up. More grease and the sound was gone.

And yeah, it is possible it has something to do with the master cylinder but I would recommend covering this other ground first.

[zero]

When was the last time you had your rear brakes serviced? Rear disk brakes are horrible for seizing up due to the amount of dirt that they are exposed to. I’m almost willing to bet that your pads are locked solid in the bracket.

[Brian]

As previously mentioned, the caliper guide pins should be lubed with every brake job, but many shops don’t do that. Also, cheap brake pads can make a lot of noise. My last thought is that the hard line under the car chassis could be partially compressed or dented. Imagine the car runs over something and the brake line under it gets crushed or partially crushed. That will definetly cause your problem. Raise and secure the car safely, then just look at the whole steel line from front to back. It should be easy to see if any part of the brake line is not round and tube shaped.

[Author]

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