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Jumping when Idle...

Discussion in 'A3/S3 Forum (8L Chassis)' started by S3MMA, Jun 18, 2011.

  1. S3MMA
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    S3MMA Member

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    [Jun 18, 2011]
    My S3 is jumping irregularly when idle, it has been doing it today at lights etc but only when in neutral... it has just had a service ...any idea's??
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  3. Sandip
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    Sandip Well-Known Member

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    [Jun 18, 2011]
    Either the throttle needs a clean or it's the MAF.....

    Look out for me, i'm in Bolton too lol
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  4. Dani_B19
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    Dani_B19 Audi-sports own special child.

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    [Jun 18, 2011]
    What do you mean by jumping? The car is or the rev counter is?

    If the rev counter is then mine always does it, cleaned tb, new maf etc and the revs still flutter!
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  5. S3MMA
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    S3MMA Member

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    [Jun 18, 2011]
    I will need to ring the garage on Monday again..it only came out on Friday!!

    I will is that your car in the pic?
    #4
  6. S3MMA
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    S3MMA Member

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    [Jun 18, 2011]
    The car is, only slightly and like I said irregularly like after 5 secs then maybe 10 secs...but when it does it you can really notice it...
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  7. Sandip
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    Sandip Well-Known Member

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    [Jun 18, 2011]
    Yeah that's mine, did you buy it from Bolton Audi?
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  8. S3MMA
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    S3MMA Member

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    [Jun 18, 2011]
    No, from a small dealer..
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  9. Sandip
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    Sandip Well-Known Member

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    [Jun 18, 2011]
    Ok, it's sounds like the throttle needs a clean i think, easy fix :icon_thumright:
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  10. S3MMA
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    [Jun 18, 2011]
    I Hope so... I have read a few threads on here about DMF replacements!!
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  11. Sandip
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    Sandip Well-Known Member

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    [Jun 18, 2011]
    Funnily enough my revs drop slighty but i can hear my DMF (rattles a bit), but it's been like that for a while, aslong as it ain't slipping i ain't touching it lol
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  12. S3MMA
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    S3MMA Member

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    [Jun 18, 2011]
    Fingers crossed then.. its something and nothing...:shrug:
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  13. Sam_
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    Sam_ Down under

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    [Jun 19, 2011]
    I'd say give it a throttle body clean and alignement with VCDS (Do you have that yet? It's very handy) and go from there before replacing things like the MAF.
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  14. Dani_B19
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    Dani_B19 Audi-sports own special child.

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    [Jun 19, 2011]
    Sam how do you do a tb alignement again?
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  15. Sam_
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    Sam_ Down under

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    [Jun 19, 2011]
    Dani,

    Take a look here:
    Throttle Body Alignment (TBA) - Ross-Tech Wiki)

    Or you can simply disconnect and reconnect the battery, but then you have to faff around with the clock and windows.
    #14
  16. Dani_B19
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    Dani_B19 Audi-sports own special child.

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    [Jun 19, 2011]
    Cheers mate.

    The battery ways not mesnt tobe good, there was something in seatcupra.net about why you should use vagcom as thats the only way to correctly do it.
    #15
  17. S3MMA
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    S3MMA Member

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    [Jun 19, 2011]
    Thanks everyone, I will have to get this done this week!
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  18. fudwiza
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    fudwiza New Member

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    [Jun 19, 2011]
    My car does this too is it bad? and blonde question but whats a DMF?
    #17
  19. s3dave
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    s3dave TFSI Hybrid Supporter

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    [Jun 19, 2011]
    DMF = Dual mass flywheel

    It could possibly be a vacuum leak get the garage to check pipes paying close attention to the pipes under the inlet manifold....
    #18
  20. S3MMA
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    [Jun 19, 2011]
    Dual Mass fly wheel
    #19
  21. S3MMA
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    [Jun 19, 2011]
    It isn't doing it today, which is strange....it only does it now and again....
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  22. sportquattro
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    sportquattro Active Member

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    [Jun 19, 2011]
    Emma, check the vac pipe that runs underneath the inlet manifold these are notorios for splitting and case exactly this problem, I had it and the hopes was split, new hose no more irratic idle.

    Hope this heklps
    Nige
    #21

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