1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Braking Vibration

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by Furkz, May 18, 2013.

  1. Furkz
    Offline

    Furkz Active Member

    Joined:
    Apr 28, 2013
    Messages:
    303
    Likes Received:
    36
    Hi, I have a 2005 2.0 tdi 140 7 speed auto avant and I've noticed lately that my brake pedal vibrates slightly when the car has warmed up. This is only When Coming to a complete stop. The brakes work fine and stop well but in the last moment of stopping there is a vibration. Went to get all discs and pads changed today and got 2 opinions where the mechanics won't change them because their fine and there's no problem.

    Ive read before that this engine with this gearbox has this issue but not been able to confirm it.

    Can anybody help on this matter. It's driving me mad. Thanks
    #1
  2. Darren198712
    Offline

    Darren198712 Member

    Joined:
    May 14, 2012
    Messages:
    187
    Likes Received:
    11
    Do you get brake judder at high speed?
    #2
  3. Furkz
    Offline

    Furkz Active Member

    Joined:
    Apr 28, 2013
    Messages:
    303
    Likes Received:
    36
    Nope no other symptoms of warped discs and they're not warped coz I did check them
    #3
  4. Furkz
    Offline

    Furkz Active Member

    Joined:
    Apr 28, 2013
    Messages:
    303
    Likes Received:
    36
    So no one else ha this problem. It am I being overzelous of this diesel setup
    #4
  5. vas67
    Offline

    vas67 New Member

    Joined:
    Oct 3, 2012
    Messages:
    18
    Likes Received:
    8
    If the brake pedal is vibrating then it could possibly be ABS related.
    I've had this this exact problem on a Passat before, there were no fault codes on this Passat so I changed both front ABS sensors
    giving me a 50 / 50 chance of getting it right.
    I was lucky, problem fixed :yahoo:
    #5
    Furkz likes this.
  6. Furkz
    Offline

    Furkz Active Member

    Joined:
    Apr 28, 2013
    Messages:
    303
    Likes Received:
    36
    I guess without plugging in a computer I won't be able to tell which ones are at fault.
    #6
  7. Molnboman
    Offline

    Molnboman Well-Known Member

    Joined:
    May 27, 2012
    Messages:
    1,159
    Likes Received:
    154
    This is interesting eh....I was recommended to floor the car a few times at speed and break hard to try and remove any **** that was on the disc and pads....unfortunately, the "vibe " is still there in my car. I wouldn't call my symptoms as a severe judder but you can certainly feel and notice a vibration coming down at speed. *******o for me is that I replaced the pads and discs last year about 20k Miles ago....If I need to do my discs again ...am thinking feck it, go for the S4, 345mm disc upgrade while am at it!

    Cheers and let's keep this thread running to find out if any of us resolve this judder mince symptoms.

    Cheers
    A
    #7
  8. Furkz
    Offline

    Furkz Active Member

    Joined:
    Apr 28, 2013
    Messages:
    303
    Likes Received:
    36
    gheres only one way of clearing the cramp out and that's not the way. However yesterday I took the wheels off and tried to clear all the rusty bits. I could see a slight mm that could have been touching the pads. Didn't do anything tbh. It comes and goes. I want to change the sensors now. But don't wanna do the front and than find out its a rear.
    #8
  9. Molnboman
    Offline

    Molnboman Well-Known Member

    Joined:
    May 27, 2012
    Messages:
    1,159
    Likes Received:
    154
    Aye, I know but Tthe cheapest tryout just in case......# Doh!!!:sorry:

    Just didn't expect to be replacing the discs and pads after only 9 months....still not convinced that they are gubbed but it doesn't feel like it could be anything else.

    Keep you posted,
    Cheers
    A
    #9
  10. vas67
    Offline

    vas67 New Member

    Joined:
    Oct 3, 2012
    Messages:
    18
    Likes Received:
    8

    Not the case SL4VE , I do have VCDS and this reported there were no fault codes at all. However I was sure this was an ABS issue so I opted to change 2 of the 4 sensors in the hope I would change the offending one. Lucky for me I did. No problems with pedal vibrating after that.
    #10
  11. Furkz
    Offline

    Furkz Active Member

    Joined:
    Apr 28, 2013
    Messages:
    303
    Likes Received:
    36

    I wouldn't change the lads and discs if their not faulty. It won't solve anything. I was about to do the same yesterday. Even had to parts bought and than returned.

    Vas67 yeah I'm in the same boat. No errors on the display when I hit check. But gonna change the sensors tomorrow. Is it a big job?
    #11
  12. Furkz
    Offline

    Furkz Active Member

    Joined:
    Apr 28, 2013
    Messages:
    303
    Likes Received:
    36
    where did you get the sensors from because euros are showing them as £80 each which is a bit ouch
    #12
  13. vas67
    Offline

    vas67 New Member

    Joined:
    Oct 3, 2012
    Messages:
    18
    Likes Received:
    8
    Yeah that is a bit expensive.

    How about trying this then.

    Disconnect any one of the 4 abs sensors, the Ecu will disable the abs function, ie, turn abs off.

    Road test car and see if you're vibrating brake pedal stops. If it does then you can be 100% sure your issue is ABS related.

    If problem is still there then you will need to look elsewhere.

    Once you have done this reconnect sensor and clear out codes. If you can't do this then the ABS light will go out when you go over 10mph, although the code for the disconnected sensor will remain in Ecu until properly reset with vcds or similar.
    #13
  14. Furkz
    Offline

    Furkz Active Member

    Joined:
    Apr 28, 2013
    Messages:
    303
    Likes Received:
    36
    I scanned the car today and no errors. Than disconnected each sensor and checked it with a volt meter. Spinng the wheels and all the sensors are working fine as they should be.

    Ater 2 hours I greased up the pads and calipers and shut up shop.

    Vas67 only just saw your message. But I tested and nothing.
    #14
  15. vas67
    Offline

    vas67 New Member

    Joined:
    Oct 3, 2012
    Messages:
    18
    Likes Received:
    8
    You say you tested and nothing...... you mean you disconnected an ABS sensor and the problem was not present?

    Or did I read your message wrong?
    #15
  16. Furkz
    Offline

    Furkz Active Member

    Joined:
    Apr 28, 2013
    Messages:
    303
    Likes Received:
    36
    I tested everything and it all works the same with the small vibrations. None of the sensors are at fault even had the back seats out to test with meter
    #16
  17. vas67
    Offline

    vas67 New Member

    Joined:
    Oct 3, 2012
    Messages:
    18
    Likes Received:
    8
    Shame you did not get a result, I'm sure you are going to persevere with this.
    let us know if you get a fix. Other than discs / pads and maybe suspension bushes not sure what else to suggest :uhm:
    #17
  18. Furkz
    Offline

    Furkz Active Member

    Joined:
    Apr 28, 2013
    Messages:
    303
    Likes Received:
    36
    i dont know, i greased the calipers and pads and still their creaking too. i give up for now, got other things to deal with. will have another think over the weekend.

    i think the only way to resolve this is to start spending money changing parts that are fine until i get lucky. not something i want to do when ive only bought the car this month


    also just had a thought, i wonder if its a lower standard of brake fluid in the system. a drain and refill of some high quality fluid may have a positive effect?
    Last edited: May 21, 2013
    #18

Share This Page