Volks AutosEM Tuning
Results 1 to 10 of 10
  1. #1
    S3Steve's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Sep 2005
    Location
    Peterborough
    Posts
    1,588

    Vag Com Brake Bleeding

    Ive just fitted some Brembo's and im having some issues bleeding the brake system now. I just cant get the pedal to firm up, it goes pretty much straight to the floor. I suspect i may have run the abs pump dry so need to bleed the abs pump, i know this can be done with vagcom but the info on the rosstech site is not particularly comprehensive. The ross tech site says to just run group 001 but when looking at it on vag com it seems you should run group 001 and 002 and possibly more groups. Has anyone used vag com for brake bleeding and if so exactly how did you do it? Any help would be much appreciated as i really want to get my car off the axle stands and back on its wheels?
    2007 A3 TDI 170 S Line
    Sold - 2002 S3

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    Neutral

    Status
    Offline
    Join Date
    Jun 2009
    Location
    S.Wales
    Posts
    55
    have you bled the master cylinder nipple?

  4. #3
    Reverse Gear

    Status
    Offline
    Join Date
    Jul 2009
    Posts
    13
    I've just fitted a new ABS pump and had to bleed the entire system inc master cylinder with a pressure bleeding kit, it took some time and plenty of fluid............But they work great now.

  5. #4
    Bignick's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Jul 2008
    Location
    Kent
    Posts
    165
    I had this problem with mine a few days ago bled them all starting at the back and went forward, It still went to the floor. then we read about the clutch needing to be done at the same time, but this was working fine . So we bled it again and they worked fine afterwards.
    The light that burns twice as bright , burns half as long.

  6. #5
    IIIadidasboy's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Jun 2009
    Location
    Kent
    Posts
    311
    Quote Originally Posted by Bignick View Post
    ....... then we read about the clutch needing to be done at the same time, but this was working fine . So we bled it again and they worked fine afterwards.
    Didn't know that - learn something new every day!!

    Steve, could also try over on the VAGCOM forum, there's also a link to the RossTech site which has got a slightly updated FAQ section - I assume you've got a registered version, why not ask RossTech themselves.
    2003 ARY A3 TQS - totally bog except for 18" Dezent Motion Blacks - Hopefully the Brembo Jr will fit these and I can start to update my sig!!

  7. #6
    S3Steve's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Sep 2005
    Location
    Peterborough
    Posts
    1,588
    Cheers guys all sorted now. Ive got a pressure bleeder and had bled the system about four times but still couldnt get it right so thought i must have got air in the ABS pump. I was clearly having brain fade last night and had forgot to do the MC, got up this morning and realised what i'd missed bled the whole system again including the MC and the ABS and now its all good. The reason i was asking about the vag com method is that there is alot of variations on how to do this on the net, some even stating to use upto group 017, i used group 001 and 002 and left it at that (i clearly had got some air in the ABS pump as this method resulted in releasing alot more air from the system).
    2007 A3 TDI 170 S Line
    Sold - 2002 S3

  8. #7
    Whoever does not try, does not learn.

    Status
    Offline
    Join Date
    Feb 2004
    Location
    Surrey
    Posts
    191
    How did you go about bleeding the clutch?
    Audi S3 (52) 265bhp Revo Stage 1

  9. #8
    S3Steve's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Sep 2005
    Location
    Peterborough
    Posts
    1,588
    Quote Originally Posted by rraghvani View Post
    How did you go about bleeding the clutch?
    Easy mate, i just connected up my pressure bleeder then bled it from the bleed nipple that is attatched onto the concentric slave cylinder. The clutch bleed nipple is on the top of the gearbox just above the starter motor.
    2007 A3 TDI 170 S Line
    Sold - 2002 S3

  10. #9
    Reverse Gear

    Status
    Offline
    Join Date
    Aug 2010
    Location
    Bergen Norway
    Posts
    9
    Hello, old thread but I am having problems with the same things. I had to replace my abs pump unit since it seized to work properly. I bought a used unit and have now installed it. I have bled the system two times but still have soft feel of the pedal. My car is an a3 1.8 (non turbo) from 1996 and I have the mark 20 abs system.

    I have not bled the clutch, but I do not understand how this could effect the brakes? The clutch only seems to take oil from the same reservoir and does not have any contact with the high pressure side of the brakes.

    I ran the abs pump with vag com under advanced settings where you can check all outputs. But was this the wrong place? When you do brake bleeding with vag com, are you supposed to have any brake bleed nipples open or will running the pump only move air out to the reservoir? The test I ran also energized all the different valves one by one, is this necessary?

    I have noticed that people talk about bleeding the master cylinder, but where do you find the brake nipple for this? Is the master cylinder different between the older and never models? I cannot find anyplace to bleed the master cylinder with!

    Any tips?

  11. #10
    bengal's Avatar
    3rd Gear
    Eskiv Champion

    Status
    Offline
    Join Date
    Sep 2010
    Location
    Staffordshire
    Posts
    537
    I have not bled the clutch, but I do not understand how this could effect the brakes? The clutch only seems to take oil from the same reservoir and does not have any contact with the high pressure side of the brakes.
    The master cylinder is underneath where you put the fluid in have a look you should see the nipple easily and you normally have to bleed the clutch as well as i have on all the cars i have owned with hydraulic clutches as well as cars i worked on when i worked in a garage its on the same system so the air will get there too. As for vag com i dont know i have never done it. I hope this helps

 

 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO