Brake problems on a 77 Trans Am! Help!

Discussion in 'Gearhead Garage' started by Torx, Dec 17, 2005.

  1. Torx

    Torx Indigenous Nudist

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    Alright, so my freinds TA had the pedal falling to the floor with ease.
    Of course thats the master cylinder right?

    So we replaced front pads and the master cylinder.
    Properly bench bled the master cylinder and bled the FRONT two wheels.

    I have no clue as to what shape the rears are in so i havent looked at those yet.

    The whole week the brakes were perfectly fine, no problems, nice and firm.
    Now today he told me he couldnt stop at a point in time, mashed em real hard and the car stopped.. He stated the brakes are now workng off and on randomly with the pedal falling to the floor everynow and then..

    What could be the problem?
    I was told, after removing a master cylinder, you must bleed all 4 wheels.
    Well I knew this at the time but he insisted that we just do the front two as we were strapped for time.
  2. offroadin

    offroadin New Member

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    if you're not a pro, its pretty hard to Re & Re a MC withough bleeding all the lines. Probably have air in the lines.

    Bleed all 4 corners starting from the furthest from the MC.
  3. Stephen

    Stephen 1337

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    Same thing has happened on my Car Torx, it worked absolutely fine then all of a sudden nothing, no brakes at all. I could get it to stop if I pressed the brake a couple of times, it was really random I could do say 40 miles and it would be fine then it would just fail.

    Anyway I took it to the mechanic and he said it was the brake compensator valve.
  4. Tacdriver

    Tacdriver Junior Member

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    Since that car has power brakes, the booster is probably bad. The booster is the big round tank that the master cylinder mounts to.
  5. Torx

    Torx Indigenous Nudist

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    ah man, imma bleed all 4, check the brake compensator valve (wheres that located?)

    and check the booster.. if its the booster imma be pissed..

    and yea it is random and he has to mash it several times really hard too... well from the one incident yesterday..

    i told him to take it to a shop bcause i dont wanna be responsible for his death...lol
    but i got the confidence of fixing it myself
  6. 81 Elcamino

    81 Elcamino New Member

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    should be located on the drivers side inner frame shouldn't be to bad to work on or get to but im talking from g-body experience but the f-body should be close to the same