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Braking issue

This is a discussion on Braking issue within the General Help forums, part of the LSx Technical Help Section category; hi guys, So about two weeks ago i changed my master cylinder because my pedal was going down at lights ...

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    Member cancam99ss's Avatar
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    Braking issue

    hi guys,
    So about two weeks ago i changed my master cylinder because my pedal was going down at lights and under sudden stops on the highway. The problem is back actually now my brake are having a weezing noise when i stop, additionally in order to feel the brake pedal harder i actually have to press the brake pedal let it go and once again press on it. What do guys reccomend, maybe air in the lines? bad master cylinder... what... i am scared to drive the car the way it is but i have too until tuesday when its my next day off what do you guys think?

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    Member LimeNine's Avatar
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    Quote Originally Posted by cancam99ss View Post
    hi guys,
    So about two weeks ago i changed my master cylinder because my pedal was going down at lights and under sudden stops on the highway. The problem is back actually now my brake are having a weezing noise when i stop, additionally in order to feel the brake pedal harder i actually have to press the brake pedal let it go and once again press on it. What do guys reccomend, maybe air in the lines? bad master cylinder... what... i am scared to drive the car the way it is but i have too until tuesday when its my next day off what do you guys think?


    did you bleed the system after the swap?

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    Member cancam99ss's Avatar
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    i did, but i am going to re bleed them tomorow

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    Member jakez28's Avatar
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    Be sure to flush the system not just bleed it, hmm that's weird if it's still acting up even after the MC. There could be a problem with the booster, try taking a look at that... maybe test the pressure or check for leaks.
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    Check for a vacc leak.. Bleed, lube caliper pins, and try again.. Also check for a cracked/pinched brake line.. I've seen folks accidently crush/crack under belly lines with a jack b4.. Aswell (something to check) as brake fluid leaks that did not drip but leaked under the pressure of braking look for "wet" spots around hard/soft lines.... Especially anywhere it's attached to the unibody..
    Last edited by Smittro; 10-28-2010 at 04:49 AM.
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    Member cancam99ss's Avatar
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    Guys thanks for te feedback!
    It was actually the calipers ! One was leaking through the pistons so I had them replaced ! New pads and bleed the lines ! Now it's better than new

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    Smiles for 9.5 Years cammed goat's Avatar
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    Quote Originally Posted by cancam99ss View Post
    Guys thanks for te feedback!
    It was actually the calipers ! One was leaking through the pistons so I had them replaced ! New pads and bleed the lines ! Now it's better than new

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