Brake Problems?
Thread Starter
Intermediate
Joined: Jan 2007
Posts: 27
Likes: 0
From: St. Johns Florida
Brake Problems?
Hi everyone. I searched the forums for hours yesterday and today with no luck on a problem similar enough to mine to offer anyhelp so I am hopeful someone out there has an idea. Here is my quandry:
bought car in January from dealer (1987 L98) with new brake pads installed at dealer. Brakes have worked great until last week. If I hit the brake pedal with even a little force, brakes engage nicely but if I let off just a little bit and re-engage, pedal goes soft and to the floor. If I slowly engage the brakes instead of jabbing the pedal, they are soft and mushy. Just started happening which is the wierd part. I checked the pads & rotors and they are in GREAT condition. Figured had air in the lines but why just now? Bled them today with no improvement. No brake fluid leaks anywhere so not sure how to fix this problem. Any ideas?
Thanks so much everyone.
David
bought car in January from dealer (1987 L98) with new brake pads installed at dealer. Brakes have worked great until last week. If I hit the brake pedal with even a little force, brakes engage nicely but if I let off just a little bit and re-engage, pedal goes soft and to the floor. If I slowly engage the brakes instead of jabbing the pedal, they are soft and mushy. Just started happening which is the wierd part. I checked the pads & rotors and they are in GREAT condition. Figured had air in the lines but why just now? Bled them today with no improvement. No brake fluid leaks anywhere so not sure how to fix this problem. Any ideas?
Thanks so much everyone.
David
Racer
Joined: Nov 2006
Posts: 297
Likes: 0
From: Wilmington NC
Hi everyone. I searched the forums for hours yesterday and today with no luck on a problem similar enough to mine to offer anyhelp so I am hopeful someone out there has an idea. Here is my quandry:
bought car in January from dealer (1987 L98) with new brake pads installed at dealer. Brakes have worked great until last week. If I hit the brake pedal with even a little force, brakes engage nicely but if I let off just a little bit and re-engage, pedal goes soft and to the floor. If I slowly engage the brakes instead of jabbing the pedal, they are soft and mushy. Just started happening which is the wierd part. I checked the pads & rotors and they are in GREAT condition. Figured had air in the lines but why just now? Bled them today with no improvement. No brake fluid leaks anywhere so not sure how to fix this problem. Any ideas?
Thanks so much everyone.
David
bought car in January from dealer (1987 L98) with new brake pads installed at dealer. Brakes have worked great until last week. If I hit the brake pedal with even a little force, brakes engage nicely but if I let off just a little bit and re-engage, pedal goes soft and to the floor. If I slowly engage the brakes instead of jabbing the pedal, they are soft and mushy. Just started happening which is the wierd part. I checked the pads & rotors and they are in GREAT condition. Figured had air in the lines but why just now? Bled them today with no improvement. No brake fluid leaks anywhere so not sure how to fix this problem. Any ideas?
Thanks so much everyone.
David
Team Owner
Joined: Feb 2006
Posts: 23,194
Likes: 117
From: San Antonio Texas
Bad Master Cyl.
That sounds like the master cyl. to me too. If you hit it hard, the cup pushing the fluid is seating to the cylinder wall and holding pressure. But if you push easy, the fluid is flowing around the edges of it and down goes the pedal.
Burning Brakes
Joined: Apr 2007
Posts: 754
Likes: 0
From: North Carolina
Just a tip. Dont go cheap and get a remanufactured one. I did get a reman. from NAPA and it went out. Same with autozone brake boosters.
Thread Starter
Intermediate
Joined: Jan 2007
Posts: 27
Likes: 0
From: St. Johns Florida
Thanks!
Hey guys, just wanted to say thanks!! I was leaning that way myself but after some of the C5 forum threads, started to think maybe sucking in air on a caliper seal somewhere as remote a possibility that might be. Thanks for all the help, I really appreciate it. I should have the new one on tomorrow and good to go by thursday. Have a great night.
David
David
Burning Brakes
Joined: Apr 2005
Posts: 1,109
Likes: 2
I am having same kind of problems.
It has been two things: braking fluidhas boiled or was too old , probably a lot of humidity in there.
And second: master cylider. The seals would leak a little, but enough to loose pressure unless you pump your brake again.
Good luck
It has been two things: braking fluidhas boiled or was too old , probably a lot of humidity in there.
And second: master cylider. The seals would leak a little, but enough to loose pressure unless you pump your brake again.
Good luck
Pro
Joined: Jan 2004
Posts: 565
Likes: 0
From: Toronto ON
Hey guys, just wanted to say thanks!! I was leaning that way myself but after some of the C5 forum threads, started to think maybe sucking in air on a caliper seal somewhere as remote a possibility that might be. Thanks for all the help, I really appreciate it. I should have the new one on tomorrow and good to go by thursday. Have a great night.
David
David
