brake pedal going all the way to floor

OLDSMOBILE
Avatar
DAVEERICKSON
  • MEMBER
  • 1 POST
i have a 1994 olds 88 with 34,000 miles on it. about a year ago i had the front brake pads replaced, and everything was fine until about a week ago. sometimes, when i begin to stop everything is good, while some other times the pedal will lose pressure and go all the way to the floor and not engage the brakes well enough to stop the car. i have followed all the lines, and i don't see any leakes, i have replaced the drivers side brake cylinder ( looked like it had a lot of "sludge" built up on it), and also checked fluid level, it is good.
Nov 25, 2007 at 9:45 PM
Advertisement
Avatar
SERVICE WRITER
  • ASE Certified Mechanic
  • 9,123 POSTS
  • ASE Certified Mechanic
That is a very typical sign of a bad master cylinder. There is a seal that may be damaged internally not always sealing. Replace it with a new one if possible.
Nov 26, 2007 at 6:24 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.