Thoughts on momentary brake failure on 89 328 | FerrariChat
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Thoughts on momentary brake failure on 89 328

Discussion in '308/328' started by pgb67, Jul 10, 2011.

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  1. pgb67

    pgb67 Karting
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    Oct 8, 2006
    192
    Long Island,NY
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    PGB
    #1 pgb67, Jul 10, 2011
    So was driving today and the brake failure light came on. Brakes were ok for about 2 minutes then lost all boost. Rock hard pedal. A block later light went out boost came back and fine ever since. Have driven a few more days with no problems. Maybe one way check valve hung up? Any thoughts, thanks in advance. Pete
     
  2. mike996

    mike996 F1 Veteran

    Jun 14, 2008
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    Mike 996
    #2 mike996, Jul 10, 2011
    Maybe a bad electrical connection caused the pump to quit for a brief period? Really can't think of what else could cause it to lose boost and then magically get it back.
     
  3. Lawrence Coppari

    Lawrence Coppari Formula 3

    Apr 29, 2002
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    Kingsport, TN
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    Lawrence A. Coppari
    #3 Lawrence Coppari, Jul 10, 2011
    I have had the momentary loss of brake assist but mine only occurred when the car was first started. In my case it is the check valve. I remove it and blow liquid through it using liquid filled tubing and an air compressor. That always remedied the problem for me.

    It has never recurred once the car leaves the driveway.
     
  4. enjoythemusic

    enjoythemusic F1 World Champ

    Apr 20, 2002
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    Steven
    #4 enjoythemusic, Jul 11, 2011
    Agree, those check valves are old and perhaps there was debris in it. Well worth taking it out and cleaning, or perhaps replacing them.
     

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