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Slight hesitation, already had a coil pack changed, any ideas?!

Discussion in 'A3/S3 Forum (8L Chassis)' started by Cossie_boy, Oct 26, 2008.

  1. Cossie_boy
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    Cossie_boy Member

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    [Oct 26, 2008]
    Hi all,

    After having my A3 remapped, it seemed to make a little hesitation more pronounced.

    The hesitation happens when you accelerate gently, for example on the way home from my g/f today i was going about 75 in 6th, and if i moved out to over take, put ur foot down a little, it goes instantly then i know its gonna hold back and then go. Its not turbo lag, if floor it, then it just goes.

    I had this a couple of months ago and my mate had it in as he works for VW and a coil pack had given up, he fitted a new one, it seemed better, but when funny again, i started using Shell Ultimate and it seemed better, but now its back to hesitating.

    I am not using the car an awful lot I must admit, in fact i am thinking of now selling it and going back to the dark side of oil burners!

    Any advice much apprecited

    Cheers

    Dave
    #1
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  3. HEKTOR
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    HEKTOR Member

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    [Oct 26, 2008]
    hello mate, it could be something to do with either n249 or n75 valves,although im not sure if your model has these.if its not working it seems to make the car hesitate under load, i had a similar problem on my cr so chhnged both of them and the dump valvand things are going fine.or check vagcom for diagnostics.
    #2
  4. Andy_S3
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    Andy_S3 Member VCDS Map User

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    [Oct 26, 2008]
    ive got a price for the N75 valve, but do you know how much it would cost to replace the N249 valve as im getting faults on both :mad:
    #3
  5. 1animal1
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    1animal1 The Clar!! it mouves!!! VCDS Map User

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    [Oct 26, 2008]
    id personally whip to a specialist, just gone through a process changing things and could have saved myself some money on my heavily depreciating brick
    #4
  6. HEKTOR
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    HEKTOR Member

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    [Oct 26, 2008]
    i paid £55 from audi for the n249 valve and it takes 5 mins to fit
    #5
  7. Andy_S3
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    Andy_S3 Member VCDS Map User

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    [Oct 26, 2008]
    Cheers, so im probably looking at around the £100 mark for both the N249 and N75. Great, lol
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  8. 1animal1
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    1animal1 The Clar!! it mouves!!! VCDS Map User

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    [Oct 26, 2008]
    or spend £50 for an hours labour and find out if they are whats at fault...if they arent you'll have spent £100 for nothing
    #7
  9. Andy_S3
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    Andy_S3 Member VCDS Map User

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    [Oct 26, 2008]
    I have been getting a very slight judder on acceleration so I guess it could a whole lot of things, not just the N249 or N75. Buggar.
    #8
  10. jesters3
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    jesters3 Active Member VCDS Map User

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    [Oct 26, 2008]
    Vagcom it
    Check your boost and oil breather hoses for any leaks or splits.
    Give the TA a clean and a realignment
    Check your MAF
    Change the N75 and N249
    Pray
    #9
  11. Cossie_boy
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    Cossie_boy Member

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    [Oct 26, 2008]
    Cheers, i wasnt sure if it may have been another coil pack, grrrrr
    #10
  12. S3 Paul
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    S3 Paul Well-Known Member Regional Rep

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    [Oct 27, 2008]
    The N249... is this the valve that sits ontop of the cam cover? towards the front? With a pipe from it going to the DV valve?
    I am sure i have read somewhere that some seat LCR owners have removed this valve alltogether... or am i very wrong?
    :uhm:
    #11
  13. nickrex
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    nickrex Member

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    [Oct 28, 2008]
    I've been getting a nasty judder and loss of power when I put my foot down occasionally but It goes back to normal when I ease off the throttle. Doesn't do it all the time but seems like something is on its way out. Anyway, I Vag-Com'd it earlier. It threw up fault code 17608 - Boost pressure control valve (N249) mechanical malfunction. I guess I've found the problem. If this sounds familiar, then its probably this. Isn't Vag-Com wonderful!!
    #12
  14. millwrx
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    millwrx Member

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    [Oct 28, 2008]
    anyone got a pic of the n249 valve,just replaced my n75 valve,
    #13
  15. HEKTOR
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    HEKTOR Member

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    [Oct 29, 2008]
    i had the same fault as you and changed the n249 and i still had the same problem, and i was told this by audi. its going back into audi next week to get checked and sorted. the n75 can cause the same problem as the n249 so its a bit misleading, i think that will be the next move for audi to change my n75.
    #14
  16. nickrex
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    nickrex Member

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    [Dec 1, 2008]
    Sorted it. It was the DV not the N249. Car pulls and sounds much better now. When the N249 valve fault was thrown up it did say at the end, "Check DV". It was right about that. Luckily I bought the DV first so didn't shell out on a N249 that wasn't needed.
    #15

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