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Author Topic: brake pedal goes hard randomly.  (Read 6111 times)

Offline reaper7881

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brake pedal goes hard randomly.
« on: February 13, 2014, 10:12:35 am »
The problem is that randomly the pedal goes rock solid, when im driving along is only done it 2/3 times now

If I pump the brakes when the cars off then start the car it goes down a little

And if I'm driving along and press the brakes more than 4 times,( on off on off)  it goes hard and doesn't really slow the car down

What's up with it?

Thanks
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Offline Gra

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Re: brake pedal goes hard randomly.
« Reply #1 on: February 13, 2014, 10:18:04 am »
Sounds like a vac pipe split?


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Offline reaper7881

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Re: brake pedal goes hard randomly.
« Reply #2 on: February 13, 2014, 10:21:12 am »
Where is it.on a  Mk5 golf 1.9tdi
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Offline Karl_mac_

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Re: brake pedal goes hard randomly.
« Reply #3 on: February 13, 2014, 11:22:13 am »
Could be worth bleeding the system to rule out air in the fluid.
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Offline Gra

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Re: brake pedal goes hard randomly.
« Reply #4 on: February 13, 2014, 07:42:34 pm »
Not sure mate but first thing if check is fluid levels check for air in system as above and all vac pipes etc


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Offline Gra

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Re: brake pedal goes hard randomly.
« Reply #5 on: February 13, 2014, 07:42:48 pm »
Does it stay down?


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Offline reaper7881

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Re: brake pedal goes hard randomly.
« Reply #6 on: February 13, 2014, 08:13:03 pm »
No it comes back up like normal
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Offline Simmo

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Re: brake pedal goes hard randomly.
« Reply #7 on: February 14, 2014, 07:19:10 am »
Quote from: Gra on February 13, 2014, 10:18:04 am
Sounds like a vac pipe split?


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+1

Has the brake fluid gone down significantly?
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Offline paulw123

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Re: brake pedal goes hard randomly.
« Reply #8 on: February 14, 2014, 02:32:17 pm »
vac pipe split, need to check them all carefully. Bloke at work had same thing last week.
cheapest place to start looking anyway.
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