Ingnition Off-solid brakes IGN On-Sink
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Suspension, Brakes and Tires Discussion, Ingnition Off-solid brakes IGN On-Sink in Item Specific Cadillac Discussion; I have a 95 STS that has sat for about 2 months. Previously the brakes had been serviced before parking. ...
  1. #1
    stsokc is offline Cadillac Owners Member
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    Ingnition Off-solid brakes IGN On-Sink

    I have a 95 STS that has sat for about 2 months. Previously the brakes had been serviced before parking. However, they stay firm with the ignition off, but as soon as I start the car they sink and get soft. I also noticed it is almost impossible to come to an immediate halt, but the rotors still look fresh. Any ideas?

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  3. #2
    Krashed989's Avatar
    Krashed989 is offline Cadillac Owners Connoisseur
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    Re: Ingnition Off-solid brakes IGN On-Sink

    Inspect the "Check valve" on the brake booster to make sure it's working properly.

  4. #3
    Dadillac's Avatar
    Dadillac is offline Cadillac Owners Connoisseur
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    Re: Ingnition Off-solid brakes IGN On-Sink

    Change your brake fluid. A soft spongy pedal is an indication that your fluid is contaminated. Don't do a simple bleed, do a complete change. If that doesn't work (I am betting it will), I suspect a faulty master cylinder.

    Don

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