Help-Brake problem
I just bought my 88 z31 and it drove fine on the ride home, but now the rear brakes are seizing up when I'm not pressing the brake pedal. Is this the Master Cylinder or the booster? I didn't see any leaks when I was checking around the car either. Any help would be great.
Update: Cleaned out brake line and put a c clamp on the pistons. Bled the brakes again and now working with no problems. Thanks for the help! Car is running and braking wonderfully |
Check the parking brake mechanism. A lot of times if the car sits or the previous owner doesn't use the parking brake it can lock up when it starts getting used. I also had a rear brake caliper partially lock with the parking brake on, had to disconnect the cable and take the spring apart to get it to release. Mine was so bad that I'm ending up replacing the caliper on the left rear, usually that isn't necessary. The odds that the problem would be booster or master cylinder related are pretty remote, they usually don't do anything unless you are actively pressing on the pedal. Take the rear tires off and look the calipers over real good as well as the parking brake linkage to the calipers. Hose them down with some brake cleaner and see if that helps, 7 out of 10 times a good cleaning and actuating the system a bunch of times will free up a parking brake system. That sounds to me like what your problem is.
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Originally Posted by Defender405
(Post 340549)
Check the parking brake mechanism. A lot of times if the car sits or the previous owner doesn't use the parking brake it can lock up when it starts getting used. I also had a rear brake caliper partially lock with the parking brake on, had to disconnect the cable and take the spring apart to get it to release. Mine was so bad that I'm ending up replacing the caliper on the left rear, usually that isn't necessary. The odds that the problem would be booster or master cylinder related are pretty remote, they usually don't do anything unless you are actively pressing on the pedal. Take the rear tires off and look the calipers over real good as well as the parking brake linkage to the calipers. Hose them down with some brake cleaner and see if that helps, 7 out of 10 times a good cleaning and actuating the system a bunch of times will free up a parking brake system. That sounds to me like what your problem is.
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Originally Posted by Defender405
(Post 340549)
Check the parking brake mechanism. A lot of times if the car sits or the previous owner doesn't use the parking brake it can lock up when it starts getting used. I also had a rear brake caliper partially lock with the parking brake on, had to disconnect the cable and take the spring apart to get it to release. Mine was so bad that I'm ending up replacing the caliper on the left rear, usually that isn't necessary. The odds that the problem would be booster or master cylinder related are pretty remote, they usually don't do anything unless you are actively pressing on the pedal. Take the rear tires off and look the calipers over real good as well as the parking brake linkage to the calipers. Hose them down with some brake cleaner and see if that helps, 7 out of 10 times a good cleaning and actuating the system a bunch of times will free up a parking brake system. That sounds to me like what your problem is.
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What car do you have? 88z dosnt tell me anything
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Originally Posted by Zuphoria
(Post 340575)
What car do you have? 88z dosnt tell me anything
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