Brakes not working

1985 VOLVO 242
53,000 MILES
Avatar
SHAYMAROM
  • MEMBER
  • 4 POSTS
After driving for about an hour, the brakes suddenly stop working - I push the pedal and it goes all the way in and the car doesn't stop at all.
I've had this problem for a while and I already put in a new master cylinder - that didn't solve it. then I replaced the vacuum pump - and that didn't solve the problem either.
What else can I try in order to solve this?
Nov 23, 2011 at 8:29 AM
Advertisement
Avatar
DOCFIXIT
  • ✓ASE Certified Mechanic
  • 18,828 POSTS
  • ASE Certified Mechanic
Has system been rebleed? Does brake failure warning light come on?
Nov 23, 2011 at 3:54 PM
Avatar
SHAYMAROM
  • MEMBER
  • 4 POSTS
Yes. I've rebleeded the system. problem came back. the brake failure light comes on every time I have the problem.
Nov 23, 2011 at 4:02 PM
Avatar
DOCFIXIT
  • ✓ASE Certified Mechanic
  • 18,828 POSTS
  • ASE Certified Mechanic
Air maybe entering system check all calipers for wetness. Pull dust boot back to look. When rebleed is there air present?
Nov 23, 2011 at 4:05 PM
Avatar
SHAYMAROM
  • MEMBER
  • 4 POSTS
I've started checking all the calipers - one was stuck - replacing it now. Do you think that could be the problem?
There is no air present while rebleeding.
Nov 23, 2011 at 4:09 PM
Avatar
DOCFIXIT
  • ✓ASE Certified Mechanic
  • 18,828 POSTS
  • ASE Certified Mechanic
stuck caliper can cause low pedal so you may have found fault
Nov 23, 2011 at 4:11 PM
Avatar
SHAYMAROM
  • MEMBER
  • 4 POSTS
thanks!
I'll let you know how it goes.
What else could be the problem?
Nov 23, 2011 at 4:13 PM
Avatar
MHPAUTOS
  • ✓ASE Certified Mechanic
  • 31,937 POSTS
  • ASE Certified Mechanic
using brake hose clamps, lock off all flexible brake hoses, if pedal is still soft and low, problem is air in lines or in master cylinder, if this is the case, re bleed system using a container and a clear hose , add brake fluid into container enough to cover the bottom of the hose, open bleeder and pump slowly watch for air bubbles, ensure resiviour is always full, keep pumping untill you are sure there is no air left, do all wheels R/R L/R R/F L/F with fluid in the container air will not suck buck up the bleeder hose.
Nov 26, 2011 at 1:17 AM
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.