displaying posts 1 to 9 of 9

Author Subject: Audi A4 1995 Brake Question
musclebeach

Seasoned Pro

Location: Yorkshire

Registered: 13 Aug 2006

Posts: 7,763

Status: Offline

Post #1
Well my car's in the garage for an issue with the brakes.......

The issue is that when driving along, and i've not braked for say a few minutes, when i do go to brake, if i very slowly depress the pedal the pedal just keeps on travelling and doesn't reach a point where it goes solid then comes into effect and really stops the car.

If i'm doing the same bit of driving and i go to push the pedal pretty fast, the pedal goes so far then goes stiff as it should......

What does this sound like to the knowledgeable people on here?
It's not a case of air in the system, it's been bled a few times, the master cylinder was replaced for a new one only 500 miles ago, the ABS system has been bypassed and it still does it.

The only answer we're coming to is that it's a faulty master cylinder?

Dunno

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Posted 13th Jan 2012 at 16:37
vernam616

Seasoned Pro

Location: Middlesbrough

Registered: 01 Mar 2008

Posts: 2,822

Status: Offline

Post #2
Vacuum pump?

I was told a way to test was pump the pedal with engine off till it stiffens, keep your foot on it and start the car, if its ok it should travel back down



N.B i am no mechanic, merely an electrician, my answer is most prob wrong !

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Audi S3 Black Edition
Posted 13th Jan 2012 at 18:05
gota6again

Seasoned Pro

Location: Gone

Registered: 18 Jan 2009

Posts: 1,595

Status: Offline

Post #3
You may have a small leak somewhere? My 6 did this and when I traced the lines one of the joints were slightly loose, tightened it up, refilled the fluid and that sorted that.
Posted 13th Jan 2012 at 18:17
musclebeach

Seasoned Pro

Location: Yorkshire

Registered: 13 Aug 2006

Posts: 7,763

Status: Offline

Post #4
Thanks guys, i'll mention it

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VW Golf GT TDI 115, 100k nooooooooooooooooooooo!

Posted 13th Jan 2012 at 19:38
judge dead

Regular

Location: Scotland

Registered: 30 Jul 2011

Posts: 397

Status: Offline

Post #5
or a siezed slider causeing the piston to come out more before it hits the pads causeing extra travel
Posted 13th Jan 2012 at 19:47
ian7675

Techno Viking

Location: Gloucestershire

Registered: 12 Oct 2007

Posts: 6,068

Status: Offline

Post #6
Not that I can help but I too have the same type of Audi and the brakes are a bit weird. Common thing on these apparently.

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Less than 24 hours to go!
Posted 13th Jan 2012 at 19:56
musclebeach

Seasoned Pro

Location: Yorkshire

Registered: 13 Aug 2006

Posts: 7,763

Status: Offline

Post #7
Ahh right thanks Ian, my Dad had a different car but same model.....his was spot on, hit the brakes first time i drove it after my nova and nearly went through the screen LOL

I'm stuck with a gutless 206 diesel 5 door until it's fixed, god it's 'orrible! Mostly because it hums in there a bit, and the brakes are almost as bad as the Audi's!

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VW Golf GT TDI 115, 100k nooooooooooooooooooooo!

Posted 13th Jan 2012 at 21:22
mik

Seasoned Pro

Location: Kent

Registered: 17 Feb 2011

Posts: 2,100

Status: Offline

Post #8
A4 brakes always were very grabby. If they aren't they are not performing as Herr Vorsprung intended.

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Cherry Rallye SOLD

Posted 14th Jan 2012 at 17:44
pinkfloyd

Senior User

Location: Ellesmere port

Registered: 03 Oct 2006

Posts: 929

Status: Offline

Post #9
There is a "common" issue with early A4's, the drain hole blocks in the plenumn chamber under the battery allowing water to fill up the plenumn area, one of the symptoms of this is water getting into the servo, in the winter this freezes and generally plays f*ck with the brakes. If you speak to your local Audi dealer they will deny its a problem, Audi UK won't want to know unless you have a full dealer service history. Best get it into a VAG specialist who will know all about the issue.

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Posted 15th Jan 2012 at 22:03

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