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breaking is hard after turbo install

Discussion in 'Newbie and Basic Turbo Tech Forum' started by rustyruststang50, Jan 16, 2014.

  1. rustyruststang50

    Joined:
    Aug 14, 2011
    now after i installed the turbo on my 88 5.0 the break pedal got really firm. it doesnt like to stop at all, i think when i speed up the pedal get a little softer and breaks a little better. any ideas what it could be?
     
    rustyruststang50, Jan 16, 2014
    #1

  2. Blackbeard

    Joined:
    Nov 1, 2013
    You have a check valve installed before your brake booster so boost doesn't fight your brake pedal
     
    Blackbeard, Jan 16, 2014
    #2

  3. TTF/Ken Staff Member

    Joined:
    Dec 31, 2011
    Either your setup is such that it's not getting vacuum, vacuum is bleeding off due to a bad check valve, or there isn't a check valve. How does the pedal feel if you start it and let it idle for a minute without driving it?
     
    TTF/Ken, Jan 16, 2014
    #3

  4. rustyruststang50

    Joined:
    Aug 14, 2011
    i will have to get back to you on that as i am out of the country and dont know that off the top of my head. what if it does get easier?

    - - - Updated - - -

    i bought a new one of those and it didnt help im going to also install a inline one when i get back and see if that helps.
     
    rustyruststang50, Jan 16, 2014
    #4

  5. afterfire

    Joined:
    Dec 10, 2012
    Is the vacuum line tapped into a source below the throttle plate? Have you considered the possibility that your booster has gone bad?
     
    afterfire, Jan 16, 2014
    #5

  6. rustyruststang50

    Joined:
    Aug 14, 2011
    that was going to be my next thing to do. but just thought it was wierd it happened right after my turbo install so i wanted to see if there was anything else first.
     
    rustyruststang50, Jan 16, 2014
    #6

  7. TTF/Ken Staff Member

    Joined:
    Dec 31, 2011
    It will tell you if it's at least getting some vacuum, help narrow it down if it's a checkvalve/boost issue.
     
    TTF/Ken, Jan 17, 2014
    #7

  8. BigDan

    Joined:
    Dec 30, 2010
    Have you thought that maybe the extra heat your routing around might be boiling the brake fluid?
     
    BigDan, Feb 1, 2014
    #8

  9. gotageta5oh

    Joined:
    Oct 26, 2003
    In my experience boiling the fluid makes the pedal go soft.
     
    gotageta5oh, Feb 1, 2014
    #9

  10. SLAUGHTERHAUS FAB

    Joined:
    Nov 24, 2011
    +1No doubt bouiled fluid will result in soft brakes and loss of braking power. Sounds like a booster issue.
     
    SLAUGHTERHAUS FAB, Feb 14, 2014
    #10

  11. LFMCameron

    Joined:
    Feb 22, 2014
    I was a dumb @$$ and left my vacuum line unhooked I guess. My supercharged blow through sat for almost 7 years and was idling at 1400rpm and I had the exact same problem. Changed hoses, bled my brake lines...boom. Better then I remembered when I parked it.
     
    LFMCameron, Feb 23, 2014
    #11
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