Brake Problem
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Suspension, Brakes and Tires Discussion, Brake Problem in Item Specific Cadillac Discussion; Hello Today I had to slam the brakes down to avoid hitting some one who did the same infront. I ...
  1. #1
    dailo is offline Cadillac Owners Member
    Automobile(s): 98 STS Right Hand Drive
    Join Date
    Apr 2004
    Location
    Hong Kong
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    79

    Brake Problem

    Hello

    Today I had to slam the brakes down to avoid hitting some one who did the same infront. I was scared because the pedal froze. I stopped the car to check this, and realised that if i push the pedal really fast, its very stiff, and gradually moves down, you can hear the pump coming on.
    Is this the fluid? the booster, anyone with any ideas?
    Is the booster on this car, the ballast looking thing on the opposite side of the master cylinder?

    Cheers

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  3. #2
    iametarq's Avatar
    iametarq is offline Cadillac Owners Connoisseur
    Automobile(s): None
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    Re: Brake Problem

    I don't know if this is your problem, but on a previous car I owned, a buick. when air was in the brake line(s), the brake pedal would not come up, or would come up very slowly.

    To fix it, I had to bleed all 4 brake lines.

    I'm sure someone who is more experience will chime in.

  4. #3
    Krashed989's Avatar
    Krashed989 is offline Cadillac Owners Connoisseur
    Automobile(s): 94 Eldorado, and a 99 ETC
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    Re: Brake Problem

    It sounds like something vacuum related to me. Start the engine for a few seconds, then have someone else turn it off while you listen for leaks around the booster. Yes it's that ballast looking thing attached to the master cylender, or rather, the master cylender is attached to it.

    I had someone come in a couple days ago that had the same symptoms you're describing. It turned out to be a hairline crack in the check valve that was leaking. The check valve is that plastic fitting that the big vacuum hose connects into on the booster. It's basically a one way valve that should only let air out, and not let air in. The hairline crack was letting air in and depleating the vacuum supply.

    I'm not saying that your check valve is bad though, because I can't see it. I'm just saying that you should check for small vacuum leaks and such around the brake booster.

    Are there any more symptoms? Say for instance, High idle? or sporadic idle speed? or codes?

  5. #4
    dailo is offline Cadillac Owners Member
    Automobile(s): 98 STS Right Hand Drive
    Join Date
    Apr 2004
    Location
    Hong Kong
    Posts
    79

    Re: Brake Problem

    nope no codes, no strange idle or anything. Cant hear any noises, except for the noise the pump makes when you push the break pedal down.
    Strange problem, guess it needs to be replaced.

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