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Revving itself after gear change :S

cawsey20 May 17, 2010

  1. cawsey20

    cawsey20 Member

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    This is probably clutch related but worth a shot !.

    I got my S3 mapped at the weekend very happy !. However i have noticed something , It was doing this before the map and no more now it has been but its annoying !.

    If you give it some beans in first or second, Push the clutch in change gear just as you push the clutch in it revs abit then drops down :S. The clutch does not actually slip and feels fine at the moment. Ive tested and tried ( Going up a hill in 4th ) no slipping.

    It does not do this every time it just strikes me as odd , It makes the car sound horrible though and makes people look so i need to get it sorted !.
    The clutch will be done next month regardless but if it sounds like anything else your opinions would be grande !.
     
  2. cawsey20

    cawsey20 Member

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    Sorry havent been very clear with the title, Its not after gearchange its just before just after you have pressed the clutch in .
     
  3. MickM

    MickM Member

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    Could possibly be a faulty clutch switch - when mine was playing up the Revs use to hold for a moment or two before dropping down when putting the clutch in
     
  4. cawsey20

    cawsey20 Member

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    Clutch switch ? , Is this mechanical or electronic ?. Sorry to be stupid here lol.
     
  5. MickM

    MickM Member

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    Its a electronic switch, it is located at the top of the clutch pedal

    The install process is pretty much the same as the Brake light switch (Guide here: http://forums.vwvortex.com/showthread.php?1158315)

    You may want to wait for someone else's opinion as am sure there are people with more knowledge/experience around here than me!
     
  6. sportstractor

    sportstractor Chugger

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    yeah has to be clutch switch. The new switches have been totally revised. Cost about £11 from audi I think
     
  7. cawsey20

    cawsey20 Member

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    Ok then , so if this is the issue what is it actually doing for it to rev?. Sticking in position or something?.
     
  8. Chlippo

    Chlippo Member

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    i had this problem and indeed it was the clutch switch. Got it from the dealer, price around 13
    easy change too...but if you like try to reset yours first.
    take it off then there is a little black pin right on the middle of the top (mmmm...)
    just slide it out to the max
    then fit the switch back again at its place...and drive
    if the problem stills...change it
     
  9. cawsey20

    cawsey20 Member

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    Out of intterest does this issue throw up any fault codes ? , surely if its electrical it should ?.
     
  10. Chlippo

    Chlippo Member

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    No fault code.
    It is mechanical and electrical at the same time...and most of the time it is the mechanical side that broke
     
  11. cawsey20

    cawsey20 Member

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    aaa lovely ok well its worth a go i guess !
     
  12. 5teve L

    5teve L Member

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    Let us know if it sorts it, I think I have the same prob on mine...

    Steve
     
  13. chancer

    chancer Member

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    The clutch switch is to disengage Cruise when the pedal is depressed. Don't be shocked if it doesn't cure the issue. A search will show you many people replacing it but not curing the issue. As with most on line discussions somebody reads a post on a cure and repeats the advice and quickly it becomes the standard response. The plus point it is cheap if you wish to try it.
    Strange thing is my works car is a VW Golf Diesel brand new and the revs rise if I depress the clutch sat at traffic lights, not all the time though. Does the fault occur stationery in the car and in neutral when you depress the pedal or only between gear changes?
     
  14. Mr.G

    Mr.G Well-Known Member Team Sepang Audi S3

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    I had exactly the same problem. The beginning of which was a broken clutch pedal.

    A friend who fitted the new clutch pedal assembly accidentally broke the small rod section of the clutch pedal position switch clean off. So as you can imagine to my horror I was like oopps another expensive mistake. Anyhow I drove the car around for a few weeks before I'd taken it to Awesome GTI and had it replaced (part of the required cruise control operation). I must say that I experienced exactly the same as you have. Revs going upward slightly on gear change or clutch depress!

    It wasn't doing this before we'd began work on the clutch pedal assembly. So I knew it could only be that. Once replaced, problem cured. I would be very surprised to find that replacing it in your case does not solve the problem.

    Even my new sensor is broken. Failed after a few days, these parts are known to fail easily.

    G
     
  15. DJ_Troopa

    DJ_Troopa K1 Driver

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    I has this problem aswell! I changed the clutch switch but this didn't solve anything. This is a problem Audi will never know the solution to lol. I'm used to it now so it doesn't bother me anymore!
     
  16. Sean_S3

    Sean_S3 Member

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    I think i tried 2 or 3 and not one of them completly made it go away. Its not as bad as it used to be so i can live with it now . For £13 ists worth a try though.
     
  17. Welly

    Welly VX220 SC Driver :)

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    Deffo start with clutch switch.

    It may just be broken, or have fallen off like mine when one of the retaining lugs snapped.

    They are less than £15 from Audi.
     
  18. JD09

    JD09 I'm not modding, I'm improving VCDS Map User

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    Nice to see Audi's and Renaults share similar issues with cheap switches . . .

    Thought I'd got away from this!!!!!
     
  19. Welly

    Welly VX220 SC Driver :)

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    Nooooooooooo. If it's made of plastic with either the VW or 4 rings stamped on it, it is ***** and practically guaranteed to break.

    Take the dipstick shroud for example.
     
  20. cawsey20

    cawsey20 Member

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    No its odd it only seems to do it when changing gear once you have given it some beans.
    I haven't noticed it when im at lights and stationary.
     
  21. Welly

    Welly VX220 SC Driver :)

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    Thats actually only partly true. The clutch switch is used by the ECU for both cruise control disengage, as well as rev matching for gear change. This is how the engine knows that the clutch has been depressed.

    No clutch switch means revs shoot up as the ECU doesn't recognise the clutch is depressed quickly enough.

    I speak from experience and research, as opposed to 'reading someone else's post' thanks.
     
    Last edited: May 18, 2010
  22. chancer

    chancer Member

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    Yes mate I too speak from experience. Believe as you wish mate but not everyone is taken in. Thanks!!
    Please don't forget the people who have had this issue on their A3 and found they didn't have a clutch switch.
    I was posting an opinion and because you stripped your engine doesn't give you chapter and verse on everything. Still every forum has a know all.
     
    Last edited: May 19, 2010
  23. sportstractor

    sportstractor Chugger

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    well if clutch switch wasnt your issue, id be look at throttle body cleaning and alignment or vac leaks on the inlet and assosiated pipes, although this usually has other side effects.

    I think most people speak from experience when it comes to this, seems to be really really common fault. Mine was obviously fault as it was wobbling about where the plastic has started to let go.

    Dont forget if you fit a new one... you shouldnt pull the plunger
     
  24. Welly

    Welly VX220 SC Driver :)

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    Thanks for the pearls of wisdom..... Wait, that's not a pearl!!

    Stripping an engine had what to do with what? The reason I posted was due to having a faulty clutch switch, with the EXACT same symptoms.

    Followed by a post correcting your incorrect post of 'it is only used for the cruise control'.

    Which it isn't.
     
  25. Welly

    Welly VX220 SC Driver :)

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    Ooooh, and I just spotted your edit.... Nothing to do with being a 'know all'. What it does have to do with, is trying to help out someone who has asked a question. I believe that to be the point of forums?

    Anyway, I have neither the time nor inclination to argue about something petty with a member of the 'pen' fifteen club - it only ends up in getting told of by the mods! LOL.

    So opinion acceptance, and whatever else. Thanks for coming. :hi:
     
  26. Mr.G

    Mr.G Well-Known Member Team Sepang Audi S3

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    Thanks for the Informative posts Welly, I for one appreciate it and the "helpful" users on this forum.

    Chancer....if you've nothing positive to add to this thread might I suggest you refrain from posting here. Negative comments and personal attacks are just plainly not necessary. We are ALL here for the greater GOOD!

    It's users like for instance, ESS-Three, Badger5, Tuffty, Welly.....the list goes on & on......that actually make the forum a wealth of information when it comes to mechanical & technical expertise. Not to mention the sponsored section and companies that give help to users.

    The fact IS we are all posting what our experiences are, and with this problem, it happens to be clutch position sensor that most of us have replaced and have cured the initial problem. It's not as you said "just" for cruise control, thanks for point that out Welly! :).

    This was EXACTLY the case with my car, read my above post. I changed it and although the cruise control doens't work at the moment the car is NO longer a nightmare to drive, with over revving during gear changes!

    G
     
    Last edited: May 19, 2010
  27. JD09

    JD09 I'm not modding, I'm improving VCDS Map User

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    And clearly every forum has an argumentative know it all.

    I know which I would rather be. . .
     

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