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Brake Problems - Please help

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by technics100, Mar 23, 2006.

  1. technics100
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    technics100 Member

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    [Mar 23, 2006]
    I have posted below about the lack of power in my tdi. It is infact a brake problem. The brake pedal seems to be sticking down when pressed. if you hit the brakes once and say 40 mph they will stay on until the car stops, the only way to release them is by pulling the brake pedal up with my foot.

    Also when I hold my foot on the brake pedal the pedal will sink nearly to the floor? is that normal? I don;t think it is and think it could be master cylinder, ABS pump or servo. anyone any ideas or similar problems..

    cheers
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  3. DaveACQ20v
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    DaveACQ20v Member

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    [Mar 24, 2006]
    Sounds like servo to me, you`ve probably cooked your pads aswell, get it checked out m8.
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  4. technics100
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    technics100 Member

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    [Apr 6, 2006]
    Just had the master cylinder changed. No luck. Its still doing it. It seems to be pulling the pedal down when driving and causing the brake to come on and then cut the fuel - causing no power. anyone any ideas?
    #3
  5. imported_ChristianF
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    imported_ChristianF Guest

    [Apr 7, 2006]
    Sounds like a duff servo, the master cylinder can't actuate itself, the servoe however can if its return spring is broken, the vacuum pump on the engine will pull the servo on.
    #4
  6. technics100
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    technics100 Member

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    [Apr 10, 2006]
    I think the servo is the next option. I dissconnected the vacuum hose and the brakes worked fine (although they were **** because of no servo) but they stopped sticking on...
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