Brake pedal issues
Thread Starter
1st Gear
Joined: Feb 2022
Posts: 1
Likes: 0
Brake pedal issues pedal went to floor once
We just purchased, and it happened once. Pedal when to floor after driving for about an hour. Otherwise no leak down, no stiff pedal, constant at speed and hard and soft braking.
No leaks, fluid level is good. Car has a newer cylinder and fluid not dark but do see some debris in the bottom of each reservoir. I can find no evidence of leaks. This is a project car my son has purchased. Car had been setting with less that a few hundred miles over the last three years.
We are completing the TLCs on the car.
Thanks in advance
No leaks, fluid level is good. Car has a newer cylinder and fluid not dark but do see some debris in the bottom of each reservoir. I can find no evidence of leaks. This is a project car my son has purchased. Car had been setting with less that a few hundred miles over the last three years.
We are completing the TLCs on the car.
Thanks in advance
Last edited by Tim from the South; Feb 26, 2022 at 02:05 PM. Reason: Post incomplete
Instructor
Joined: Dec 2016
Posts: 241
Likes: 77
From: Arlington VA
If you are sure there are no leaks and the pedal goes down intermittently then you probably have a master cylinder problem. You mention that you see some debris in the reservoir, the cups in master may have been damaged. What I would do is use the brake with the engine off and deplete the vacuum in the booster. You can get a better feel for what is going on with no booster. Just keep applying the brake in various ways. Pressed hard, slowly, after waiting some time between applications etc to get a better feel for what is wrong. good luck, intermittent problems can be frustrating to solve.
Drifting
Joined: Jan 2005
Posts: 1,350
Likes: 322
From: San Antonio Tx
Moisture in the brake fluid can cause that problem when the brakes are hot. You might have a brake caliper sticking slightly causing excess heat. You can Check after driving with an ir temperature gun. I recommend a complete fluid flush using fluid from a sealed container.
