Welcome to the world of Saab ! Register
Results 1 to 5 of 5
  1. #1
    Mike
    Moderator Shazam's Avatar
    Join Date
    30 Jul 2010
    Location
    Rochester, New York, USA
    Posts
    1,984
    Saab(s)
    1973 96
    Thumbs Up:   0

    Intermittent Loss of Brake Pressure and Actual Braking - 1996 900 SE

    Stopped at a stop light, my foot slowly started to sink to the floor. Doing so, the brakes started to work less and less. Once to the floor, brakes didn't even work to hold the car stopped; had to switch to neutral. Pumping the brakes helps temporarily (while still stopped). Then I headed off to home. Come the next light, the brakes were fine, until I was fully stopped for a good 15 or so seconds, and it repeated all over again with the pedal slowly sinking to the floor.

    I'm thinking a leak in the vacuum of the brake booster or something. Any ideas on where to start?

    0 Not allowed!
    Free SaabWorld Stickers
    "Sometimes it is better to travel than it is to arrive." - Robert Pirsig

  2. #2
    Mike
    Moderator Shazam's Avatar
    Join Date
    30 Jul 2010
    Location
    Rochester, New York, USA
    Posts
    1,984
    Saab(s)
    1973 96
    Thumbs Up:   0
    Forgot to mention, no leaking break fluid, reservoir is full.

    0 Not allowed!

  3. #3
    Jeffrey
    Master SaabTech/Moderator Burnsside42's Avatar
    Join Date
    25 Oct 2010
    Location
    South Eastern PA
    Posts
    1,309
    Saab(s)
    - 86' 9KT - 95' 9K Custom CS - 06' 9-3 Sedan - 06' 9-3 Combi - 08' 9-3 TurboX -
    Thumbs Up:   3
    Booster leaks = very hard rock like pedal.

    Master cylinder internal by-pass issue sounds just like the symptoms you have. Ensure your fluid level is not dropping indicating a caliper or line leak - but it sounds like a master cylinder to me.

    0 Not allowed!

  4. #4
    Frank
    Administrator nordwulf's Avatar
    Join Date
    30 Jul 2010
    Location
    NW Michigan, USA
    Posts
    7,621
    Saab(s)
    previous: 2006 9-3, 2001-06 9-5, 2011 9-4X
    Thumbs Up:   73
    I was thinking master cylinder cup seals but it would be difficult to imagine both would go bad at the same time. If one fails, there should be enough brake power for 2 wheels. Unless one was already failing earlier. I don't know if this is a common issue with Saabs. I remember disassembling a master cylinder at school but that was a loooong time ago.

    0 Not allowed!

  5. #5
    Mike
    Moderator Shazam's Avatar
    Join Date
    30 Jul 2010
    Location
    Rochester, New York, USA
    Posts
    1,984
    Saab(s)
    1973 96
    Thumbs Up:   0
    Just on availability of parts, it looks like a rebuild isn't feasible. Still no leaks from anywhere that I can see. No one in town has a replacement part either, but they can get it.

    Thanks guys.

    0 Not allowed!
    Free SaabWorld Stickers
    "Sometimes it is better to travel than it is to arrive." - Robert Pirsig

 

 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
All times are GMT. The time now is 14:07.
Powered by vBulletin® Version 4.2.5
Copyright © 2018 vBulletin Solutions Inc. All rights reserved.