Monster MotorsportChris Nott
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  1. #1
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    Unresponsive brakes this morning :S

    So this morning was driving to work and twice had a very hard brake pedal and very unresponsive brakes! Wasn't an issue as very few people are awake that early on a Saturday but want to get to the bottom of it before the misses and little one use the car.

    Seen a few threads online about water in the master cylinder due to blocked plenum drains but last time I checked them they were all clear.

    Other thought was could it be to do with the fact it was -1 outside? Calipers sticking?

    Any ideas?

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  3. #2
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    My first thought was water ingress....
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  4. #3
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    Air vacuum pipe off, giving no servo assistance?
    '02 TDi 130 Sport: Mods to date: BXP 160 conversion, EGR delete, Decat, Helix SMF fast road clutch, 312mm front rotors, full DIS , CC, Xenons.
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  5. #4
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    Thank you both, thought water ingress might be the case... Is it the water in there freezing and then causing an issue or just water in there full stop? (I know water in there full stop is bad but is it only going to be a serious issue when cold?)

    Will check vacuum pipe as that's a good shout but I'm guessing it might not be that as it was only intermittent.

    Anyone know if master cylinder is a pretty easy DIY or is it a garage job?

  6. #5
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    It's usually when the water freezes that you get the hard pedal issue. Was it a frost this morning where you were?
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    Very cold here this morning which would explain why I noticed it. Thanks James, another job to get done ASAP!

  8. #7
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    My servo gave up just a month ago and it was due to water. In my case the power went with it too. Also the brake pedal was very hard like you say.

    Went and bought a second hand servo which also came with the Master Cylinder although u don't need to change the master cylinder. Cost me £30 which was a damn good bargain considering they go for £80.

    Only tip I can give u is to also buy the vacuum pipe that goes into the servo as mines broke whilst getting it off.

    Also u need 1L DOT4 brake fluid.

 

 

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