Emergency Assistance needed - Brake Failure.
Thread Starter
Racer
Joined: Oct 2007
Posts: 270
Likes: 0
From: Chapel Hill NC
Emergency Assistance needed - Brake Failure.
1977 4 speed manual.
I just made it to the parking deck this morning... as I have just lost my brakes.
The Brake light on the dash is on.... and I have no resistance at the brake pedal. I have to pump many times to get just enough braking to stop the car.
No fluid leaks anywhere. Reservoir is full. New brake lines and calipers.
So what would my issue be? I need a good solid direction to narrow down what the problem is as quickly as possible. What tests can I perform to figure it out? Proportioning valve? Brake booster?
Thanks in advance for your quick replies. As I am stranded at the moment... I do not have the time to search the forums.
I just made it to the parking deck this morning... as I have just lost my brakes.
The Brake light on the dash is on.... and I have no resistance at the brake pedal. I have to pump many times to get just enough braking to stop the car.
No fluid leaks anywhere. Reservoir is full. New brake lines and calipers.
So what would my issue be? I need a good solid direction to narrow down what the problem is as quickly as possible. What tests can I perform to figure it out? Proportioning valve? Brake booster?
Thanks in advance for your quick replies. As I am stranded at the moment... I do not have the time to search the forums.
Thread Starter
Racer
Joined: Oct 2007
Posts: 270
Likes: 0
From: Chapel Hill NC
Le Mans Master
Joined: Aug 2006
Posts: 7,427
Likes: 1,560
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Try bleeding the brakes again, if the brakes are good again after bleeding but fail after the next ride then check the run out.
Burning Brakes
Joined: Oct 2009
Posts: 838
Likes: 2
From: Baton Rouge Louisiana
I changed out the brake lines, calipers and the master cylinder all at the same time and haven't had any problems. I bled the lines as per the shop manual which says to bleed in the following sequence: Left rear inner and left rear outer, right rear inner and right rear outer, left front then right front. My guess is that you probably have a bad 30 year old master cylinder if you bled the lines correctly.
Thread Starter
Racer
Joined: Oct 2007
Posts: 270
Likes: 0
From: Chapel Hill NC
I managed to limp it into the shop and I am getting the MC replaced.
I actually had one in the back of the car for that rainy day upgrade.
Thanks a million for your quick help it diagnosing the problem.
I actually had one in the back of the car for that rainy day upgrade.
Thanks a million for your quick help it diagnosing the problem.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
