Jun 6, 2026 #1 M MARCH374 Well-Known Member Joined Jan 28, 2012 Messages 159 Reaction score 27 Have a 1979 Aspen with stiff hard pedal. How do you know whether its the Booster or Master Cyclinder ? Thanks
Have a 1979 Aspen with stiff hard pedal. How do you know whether its the Booster or Master Cyclinder ? Thanks
Jun 7, 2026 #2 LSM360 Well-Known Member Joined Nov 28, 2011 Messages 931 Reaction score 361 Location Melbourne, Florida Have you checked the vacuum line that go to booster?
Jun 7, 2026 #3 M MARCH374 Well-Known Member Joined Jan 28, 2012 Messages 159 Reaction score 27 LSM360 said: Have you checked the vacuum line that go to booster? Click to expand... Yes i did. Thanks
LSM360 said: Have you checked the vacuum line that go to booster? Click to expand... Yes i did. Thanks
Jun 7, 2026 #4 M Mikes5thAve Well-Known Member Joined Mar 3, 2020 Messages 1,949 Reaction score 826 Location Canada Do they work? Usually when master cylinders are bad it's seized or leaking, if they work but not getting power assist it's the booster.
Do they work? Usually when master cylinders are bad it's seized or leaking, if they work but not getting power assist it's the booster.
Jun 7, 2026 #5 M MARCH374 Well-Known Member Joined Jan 28, 2012 Messages 159 Reaction score 27 Barely have to stand on the pedal even when moving very slow
Jun 7, 2026 #6 AMC Diplomat Well-Known Member Joined Feb 14, 2023 Messages 1,966 Reaction score 950 Location NY Are the brakes locking up instantly? Check your rear brakes and see if the shoes are binding
Jun 8, 2026 #7 M MARCH374 Well-Known Member Joined Jan 28, 2012 Messages 159 Reaction score 27 No, they are not locking up.