MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: reaper7881 on February 13, 2014, 10:12:35 am

Title: brake pedal goes hard randomly.
Post by: reaper7881 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

Title: Re: brake pedal goes hard randomly.
Post by: Gra on February 13, 2014, 10:18:04 am

Sounds like a vac pipe split?


Sent from my iPhone using Tapatalk

Title: Re: brake pedal goes hard randomly.
Post by: reaper7881 on February 13, 2014, 10:21:12 am

Where is it.on a  Mk5 golf 1.9tdi

Title: Re: brake pedal goes hard randomly.
Post by: Karl_mac_ on February 13, 2014, 11:22:13 am

Could be worth bleeding the system to rule out air in the fluid.

Title: Re: brake pedal goes hard randomly.
Post by: Gra 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


Sent from my iPhone using Tapatalk

Title: Re: brake pedal goes hard randomly.
Post by: Gra on February 13, 2014, 07:42:48 pm

Does it stay down?


Sent from my iPhone using Tapatalk

Title: Re: brake pedal goes hard randomly.
Post by: reaper7881 on February 13, 2014, 08:13:03 pm

No it comes back up like normal

Title: Re: brake pedal goes hard randomly.
Post by: Simmo 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?


Sent from my iPhone using Tapatalk

+1

Has the brake fluid gone down significantly?

Title: Re: brake pedal goes hard randomly.
Post by: paulw123 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.