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HELP!!! Revving when stationary, lumpy sound

Discussion in 'A3/S3/Sportback (8P Chassis)' started by magic123, Jan 3, 2014.

  1. magic123
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    magic123 Member

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    [Jan 3, 2014]
    hey, i have a 56 plate 2.0 TFSI a3 quattro s-line last few days the car has been revving when im stationary and tonight sounded pretty lumpy, revs go up then down then up like im revving it, have a vid if needed, seen this before on a thread but cant find it, aslo keeps flat spotting and then all of a sudden pulls at like 4.5/5k revvs dont know if this is linked? thanks
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  3. magic123
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    magic123 Member

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  4. bez101
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    bez101 Yorkshire & Humber Rep. Regional Rep VCDS Map User

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    [Jan 3, 2014]
    MAF ?
    best off get is scanned for codes
    #3
  5. magic123
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    magic123 Member

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    [Jan 3, 2014]
    sounds really lumpy, i did have a clicking noise in car saying air flow and ventilation failure if thats anything to do with it? PCV valve? also i can hear a tshhhh noise when i put the clutch down to change gear, like the dump valve but quite loud? hasnt always done it....
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  6. Keane
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    Keane Active Member

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    [Jan 3, 2014]
    Personally the maf or pcv valve :)
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  7. mjr901
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    mjr901 S3 Pollution Plus+ Edition

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    [Jan 3, 2014]
    PCV all day long.
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    wuta3 likes this.
  8. magic123
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    magic123 Member

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    [Jan 3, 2014]
    cheers, any way to tell which? lol PCV was checked 4-5months ago
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  9. mjr901
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    mjr901 S3 Pollution Plus+ Edition

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    [Jan 3, 2014]
    unplug MAF, go for a spin, if still ****, then its PCV.

    PCV part number:

    06F129101N

    This part has been superseded about 3 times from memory, and i cant quite remember the latest one or if indeed it may be this, so the letter may change when you actually buy it from audi or TPS for example. Either way that number will point the advisor in the right direction as the system will tell him.


    Gasket for it: 06F103483E

    Quite strange actually, as i picked one of these up from Audi Worcester this morning!!
    Last edited: Jan 3, 2014
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  10. magic123
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    magic123 Member

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    [Jan 3, 2014]
    so need both parts? cheers how do/where do i unplug? the flat spotting too?
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  11. mjr901
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    mjr901 S3 Pollution Plus+ Edition

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    [Jan 3, 2014]
    Always good practice to change the gasket too yes.

    nicked image from google, engine layout same, just in a golf.

    [​IMG]

    Unplug the one in the yellow circle, ignore the other colours on there.
    #10
  12. magic123
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    magic123 Member

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    [Jan 3, 2014]
    cheers, in my defense i am a girl lol, anything else it could be? someone mentioned a breather? (Sorry some of it is foreign to me) waanna know what the tssssh noise when pull clutch up when changed gear
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  13. mjr901
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    mjr901 S3 Pollution Plus+ Edition

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    [Jan 3, 2014]
    Could be diverter valve diaphragm split, giving your poor performance.

    Best off getting your car scanned for faults on the diag machine.

    Replace the diverter valve anyway with the latest revision, either Rev D or G. If yours hasnt been replaced yet it must be goosed by now.

    I'm certain its the PCV, its got the full characteristics of PCV failure.
    Last edited: Jan 3, 2014
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  14. Marshy
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    Marshy Active Member

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    [Jan 3, 2014]
    Yeah typical pcv symptoms.
    #13
  15. magic123
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    magic123 Member

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    [Jan 3, 2014]
    thanks, what would the MAF symptoms be?
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  16. magic123
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    magic123 Member

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    [Jan 3, 2014]
    is the diverter valve and PCV valve the same thing? its only on 50k miles (50.300 or somethng) what codes would either one have? no EM light on tho
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  17. mjr901
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    mjr901 S3 Pollution Plus+ Edition

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    [Jan 3, 2014]
    Flat spots, poor throttle response, smoke from rear. (fuel mixture would be wrong, hence smoke)

    Diverter valve and PCV are not the same thing no.

    On a K03 turbo car(like yours) the diverter valve sits right by the turbo,unlike on a later K04 turbo car, where its right near the front.

    The PCV is at the front of the engine underneath your engine cover.

    PCV below

    [​IMG]
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  18. magic123
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    magic123 Member

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    [Jan 3, 2014]
    thanks, dont think ive got smoke, basically car drinks fuel always has done, get a pshhhh from almost behind steering wheel when lift clutch up from changing gear (not always done it) last few months put foot down and sometimes doesnt move or it does abit n then get a kick up the arse n car jumps forward around 4.5k revvs, then yest and today just sitting there in neutral starts revving itself, gong back down then back up and down not over 1.5k revvs tho have a vid if needed, sounds pretty lumpy but cant get to a garage for just over a week..... any ideas?
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  19. mjr901
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    mjr901 S3 Pollution Plus+ Edition

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    [Jan 3, 2014]
    From my sofa its getting difficult to diagnose any further, and a video probably wouldnt help. Theres little else to go wrong which is air orientated.

    This pshhhh noise could quite easily be the DV which has faltered, its job is to re-use air and shoves it back to the turbo to keep it spooled, so upon gearchange your venting this air to the atmosphere due to a split diaphragm, hence the flat power feeling.

    And guess where its located? Otherside of the bulkhead behind the steering wheel.

    Either way, if you replace both the DV and the PCV, i'd like to think you'd be fully cured of any turbo lag and you'd have an even idle.
    Last edited: Jan 3, 2014
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  20. magic123
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    [Jan 3, 2014]
    thanks, any idea on cost for them? you think it could be MAF or breather or anything else? sorry and thankyou really appreciate ur help xx is it ok to drive on it for a week or so?
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  21. mjr901
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    mjr901 S3 Pollution Plus+ Edition

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    [Jan 3, 2014]

    I'd do MAF last in this situation, as your symptoms suggest other things that i'd say are more likely in my eyes.

    Its obviously not ideal to drive it with a pooped PCV. I'd refrain from unnecessary journeys and do it as soon as you can. It wont blow up or anything...

    PCV £40 + £4 ish gasket

    DV, a used one from £20, or new from around £40-60 depending on who you know...
    Last edited: Jan 3, 2014
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  22. magic123
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    magic123 Member

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    [Jan 3, 2014]
    cheers, would you do DV too? or just those 2? what sort of errors would vagcom bring up for either?
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  23. mjr901
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    mjr901 S3 Pollution Plus+ Edition

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    [Jan 3, 2014]
    "boost pressure regulation not reached" for the DV or something like that. There may not be a fault code produced for it, dont rely on that.

    My experience says simply replace the just DV and PCV.
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  24. magic123
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    magic123 Member

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    [Jan 3, 2014]
    thanks just seen the comment bout the DV and the noise... is there a seal or whole thing? would u use eurocarparts or another brand apart from audi?
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  25. mjr901
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    mjr901 S3 Pollution Plus+ Edition

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    [Jan 3, 2014]
    Use genuine parts for these items if i were you, cheap chinese parts for example will see you buying it all again shortly down the line.

    Your DV may look like this with a rubber diaphragm instead of a piston type:

    [​IMG]

    Yours is probably a Rev C, might be a Rev B like the above, either way, you need the updated D or latest G version. You'll need the whole thing, not just a seal.
    Last edited: Jan 3, 2014
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  26. magic123
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    magic123 Member

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    [Jan 3, 2014]
    codes on side your showing are 06F 145 710 C
    5900 110 7044
    7.00415.03 APG if that helps?
    #25
  27. magic123
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    magic123 Member

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    [Jan 3, 2014]
    PCV is 06F129101F
    PA6 GF30

    was sad enough to take pics when they came out of the car, can not get it covered on a recall?

    how much can you get them for? ;) thankyou for putting up with me really really really appreicate it!!!!
    #26
  28. mjr901
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    mjr901 S3 Pollution Plus+ Edition

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    [Jan 3, 2014]
    The one in the picture above is a 06F 145 710 B.

    If you have a 06F 145 710 C, ideally you want the new one now.

    You need 06F 145 710 D or 06F 145 710 G fitted to your vehicle along with the PCV valve 06F129101N and gasket for it: 06F103483E.

    Hit print, show those part numbers to parts man at Audi. Then get them fitted. Job done.
    #27
  29. magic123
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    magic123 Member

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    [Jan 3, 2014]
    thankyou :) you know so much!!!
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  30. mjr901
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    mjr901 S3 Pollution Plus+ Edition

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    [Jan 3, 2014]
    06F129101F is the previous number of the PCV, latest revision of this part is 06F129101N
    #29
  31. magic123
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    magic123 Member

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    [Jan 3, 2014]
    can you get these parts? ;) guess i know ive got old parts in a way a good thng
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  32. mjr901
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    mjr901 S3 Pollution Plus+ Edition

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    [Jan 3, 2014]
    I can...I'm a parts advisor..haha but I'm in Worcester and your in Essex..

    so getting them to you including postage and possible breakage etc will probably be more expensive than you going into your local dealer.
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  33. magic123
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    magic123 Member

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    [Jan 3, 2014]
    funny that lol :) so do both n should be sorted basically, think audi would charge me n arm n a leg to fit but looking around £90ish for parts
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  34. mjr901
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    mjr901 S3 Pollution Plus+ Edition

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    [Jan 3, 2014]
    Get a knowledgeable VAG independent to fit them, Audi would charge approximately 1 million pounds.

    Go to AMD Essex. They'll sort you out. Mention the Audisport Forum for a potential discount.

    AmD Tuning - High-performance vehicle tuning, ECU remaps, Exhausts and Servicing
    #33
  35. magic123
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    magic123 Member

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    [Jan 3, 2014]
    cheers, went to AMD for my remap on my old golf, cheers :) its about 45miles away from me but will give them a buzz, any feedback on all klasse autos (if heard of them) based near stansted airport
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  36. magic123
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    magic123 Member

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    [Jan 3, 2014]
    EGR? lol trying to phase out everything
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  37. mjr901
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    mjr901 S3 Pollution Plus+ Edition

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    [Jan 3, 2014]
    Personally never heard of them, but thats not to say they're bad. AMD are tried and tested, spoken to them on the phone a couple of times last year, seemed nice guys, endless positive comments from forum members.
    #36
  38. magic123
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    [Jan 3, 2014]
    cool, yeah impressed when i got my golf remapped with full exhaust no complaints with them, just emailed them cheers :) thankyou !!!!!
    #37
  39. mjr901
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    mjr901 S3 Pollution Plus+ Edition

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    [Jan 3, 2014]
    Doesnt tend to send the revs upwards, if anything downward and stalling on idle usually, car may run hot too.

    I dont get the feeling its the EGR in the slightest if im honest.
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  40. magic123
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    [Jan 3, 2014]
    cheers :) so just try and avoid driving it but it shouldnt blow up if i do? gonna be doing bout 225 miles by next sat :/ n more if go to AMD just worried it will blow up :(
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  41. SJ
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    SJ Member

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    [Jan 3, 2014]
    Can't help with a review of klasse autos but I'm going to guess that I'm not too far from you, more than happy to scan the car for fault codes prior to you buying any parts.
    #40

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