audi quattro brake problem

newt · 31-05-09, 09:39 PM

i have a brake problem with my 90 quattro, i have bled the brakes and i still have a rubbish pedal, it DOES go hard but only 3/4 of the way down, there is no creeping down beyond this point.
Up till the point of it going hard the pedal feels "spongy" as if you havent bled them. Once you get a "pedal" at 3/4 the brakes work fine car pulls straight under braking and slows down as it should (for an 85 car

)
im gonna bleed them again in a couple of days, as the car has been stood for ages (all calipers are free)
there is a little device piped in below the mastercylinder that i can only guess is a regulator , this looks a little damp on the end where the end cap is pressed in or held in by a circlip
any other ideas

amanda · 31-05-09, 10:06 PM

Proportinal valve needed

Booty · 31-05-09, 10:10 PM

It's deffo either that or the master cylinder, lovely job that!!

newt · 31-05-09, 10:10 PM

Quote:

Originally Posted by amanda

Proportinal valve needed

yea as expected really

, is that the valve i was refering too?
anyone got one?

amanda · 31-05-09, 10:32 PM

It's the 4 way valve that takes the brake pipes in..........try audi or pete reeves, Booty can prob explain it better than me

Booty · 31-05-09, 10:36 PM

It's not something really that you'd sell on as second hand, for safety reasons I suppose. You need to make sure which one it is then buy new. Shouldn't have an issue getting hold of one..........yet!!

BIGGYIN · 01-06-09, 12:52 AM

Good job it wasn,t the master cylinder,it,s a bitch of a job.
You have to take half of your car apart,to get to it.

mikes2 · 01-06-09, 04:50 PM

The brake pressure regulator is NLA and has been for some time.

I imported one from the USA last year

Martc · 01-06-09, 04:53 PM

Quote:

Originally Posted by mikes2

The brake pressure regulator is NLA and has been for some time.

I imported one from the USA last year

So thats it then..... Can't get one of those and the car is off the road for good?

Can they be rebuilt or an OEM version available somewhere?

amanda · 01-06-09, 04:57 PM

Pete reeves does them ...........or did do them ring him and ask 01214760034

31-05-09, 10:06 PM	#2
amanda quattro hussie!! Classic Audi Club Member Join Date: Jul 2007 Location: doin' it on all fours!! Posts: 5,993	Proportinal valve needed __________________ Mystic blue m3 ghay hairdresser mobile 4 sheds 1 shopping trolley Gti RS6 ...my baby

31-05-09, 10:10 PM	#3
Booty Moderator Classic Audi Club Member Join Date: Sep 2007 Location: Deepest darkest Shropshire Posts: 5,077	It's deffo either that or the master cylinder, lovely job that!! __________________ 1987 Audi Coupe quattro - Clarion Tribute Car 2012 Audi A6 Allroad 2004 Mercedes SLK 350 2017 Mercedes GLA 220

31-05-09, 10:32 PM	#5
amanda quattro hussie!! Classic Audi Club Member Join Date: Jul 2007 Location: doin' it on all fours!! Posts: 5,993	It's the 4 way valve that takes the brake pipes in..........try audi or pete reeves, Booty can prob explain it better than me __________________ Mystic blue m3 ghay hairdresser mobile 4 sheds 1 shopping trolley Gti RS6 ...my baby

31-05-09, 10:36 PM	#6
Booty Moderator Classic Audi Club Member Join Date: Sep 2007 Location: Deepest darkest Shropshire Posts: 5,077	It's not something really that you'd sell on as second hand, for safety reasons I suppose. You need to make sure which one it is then buy new. Shouldn't have an issue getting hold of one..........yet!! __________________ 1987 Audi Coupe quattro - Clarion Tribute Car 2012 Audi A6 Allroad 2004 Mercedes SLK 350 2017 Mercedes GLA 220

01-06-09, 04:50 PM	#8
mikes2 4 ring whore! Classic Audi Club Member Join Date: Nov 2007 Location: Polmont Posts: 2,617	The brake pressure regulator is NLA and has been for some time. I imported one from the USA last year __________________ 1991 90 quattro 20v sport 1991 90 quattro

01-06-09, 12:52 AM	#7
BIGGYIN 4 ring whore! Classic Audi Club Member Join Date: Mar 2009 Location: Merseyside Posts: 7,976	Good job it wasn,t the master cylinder,it,s a bitch of a job. You have to take half of your car apart,to get to it.

01-06-09, 04:57 PM	#10
amanda quattro hussie!! Classic Audi Club Member Join Date: Jul 2007 Location: doin' it on all fours!! Posts: 5,993	Pete reeves does them ...........or did do them ring him and ask 01214760034 __________________ Mystic blue m3 ghay hairdresser mobile 4 sheds 1 shopping trolley Gti RS6 ...my baby

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