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

Eggy smell and engine management light

Discussion in 'A3/S3/Sportback (8P Chassis)' started by baz1, Aug 14, 2009.

  1. baz1
    Offline

    baz1 New Member

    Joined:
    Sep 24, 2007
    Messages:
    23
    Likes Received:
    0
    Hi guys,

    got a a3 3.2 v6 dsg. Engine management light has come on, revs are bouncing around on idle and getting a strong eggy smell from engine bay!

    Any ideas?
    Last edited by a moderator: Aug 16, 2009
    #1
  2. voorhees
    Offline

    voorhees Moderator Staff Member Moderator

    Joined:
    Dec 18, 2005
    Messages:
    15,018
    Likes Received:
    1,145
    battery ?
    #2
  3. baz1
    Offline

    baz1 New Member

    Joined:
    Sep 24, 2007
    Messages:
    23
    Likes Received:
    0
    Why wud ther b an eggy smell??
    #3
  4. voorhees
    Offline

    voorhees Moderator Staff Member Moderator

    Joined:
    Dec 18, 2005
    Messages:
    15,018
    Likes Received:
    1,145
    lack of water in the battery causing it or "The sulphur smell from the exhaust, is actually caused by running the engine/cat convertor slightly lean for long periods and then running under a rich condition (ie going up a hill under heavy load) This is when the sulphur smell (rotten egg) is produced.


    Under relatively lean conditions, the sulphur found in gasoline is converted to sulphur trioxide, then during the rich running condition the sulfur trioxide is converted into hydrogen sulphide (rotten egg smell) within the catalytic converter.


    Audi of America issued a service bulletin Group 24, #92-04 which detailed this problem. They list the cause as : the gasoline sulphur content and the characteristic of catalytic convertor to store sulphur compounds and release them during rich engine running conditions.


    Switching gasoline brands may help. The Oxygen sensor may also need to be replaced to correct a fuel injection mixture problem"
    #4
  5. voorhees
    Offline

    voorhees Moderator Staff Member Moderator

    Joined:
    Dec 18, 2005
    Messages:
    15,018
    Likes Received:
    1,145
    or you have a flatulence problem your unaware of ?
    #5
  6. baz1
    Offline

    baz1 New Member

    Joined:
    Sep 24, 2007
    Messages:
    23
    Likes Received:
    0
    Wats that? Thanks 4 ur help btw
    #6
  7. voorhees
    Offline

    voorhees Moderator Staff Member Moderator

    Joined:
    Dec 18, 2005
    Messages:
    15,018
    Likes Received:
    1,145

    farting :)
    #7
  8. paddy
    Offline

    paddy Audi=No fault code, no idea

    Joined:
    Feb 6, 2008
    Messages:
    5,133
    Likes Received:
    122
    I had this last week. Lumpy at tickover but fine once reving. You need to get the fault code but mine was the lambda sensor. About £200 at Audi fitterd and tested.
    #8
  9. baz1
    Offline

    baz1 New Member

    Joined:
    Sep 24, 2007
    Messages:
    23
    Likes Received:
    0
    i'm also getting a petrol smell and a whooshing noise everytime i press the accelerator. Is this safe to drive to the garage tomorrow?
    #9
  10. edition
    Offline

    edition Active Member

    Joined:
    Nov 1, 2007
    Messages:
    1,428
    Likes Received:
    0
    The battery is in the boot!
    #10
  11. paddy
    Offline

    paddy Audi=No fault code, no idea

    Joined:
    Feb 6, 2008
    Messages:
    5,133
    Likes Received:
    122
    Mine smelt of petrol at tickover as well....I drove it 20 miles to audi guildford no problem...
    #11
  12. voorhees
    Offline

    voorhees Moderator Staff Member Moderator

    Joined:
    Dec 18, 2005
    Messages:
    15,018
    Likes Received:
    1,145
    so you are saying that if you never topped it up with water the smell of sulphur would magically disappear and not enter the cabin ?
    #12
  13. paddy
    Offline

    paddy Audi=No fault code, no idea

    Joined:
    Feb 6, 2008
    Messages:
    5,133
    Likes Received:
    122
    Its not likely as it has a sealed lid to its compartment and is maintanance free anyway. Cant see how this would give him a lumpy tickover either..

    at the end of the day its guess work but can he drive it saftly to a garage........well i wouldnt put my head on the block :)
    #13
  14. Broken Byzan
    Online

    Broken Byzan Photographic Moderator Staff Member Moderator

    Joined:
    Apr 26, 2004
    Messages:
    12,568
    Likes Received:
    267
    It's probably a faulty coil pack, causing an overrich situation, causing the cat to spew the fumes
    #14
  15. voorhees
    Offline

    voorhees Moderator Staff Member Moderator

    Joined:
    Dec 18, 2005
    Messages:
    15,018
    Likes Received:
    1,145
    so okay your right I'm wrong but whats saftly ;)
    #15
  16. paddy
    Offline

    paddy Audi=No fault code, no idea

    Joined:
    Feb 6, 2008
    Messages:
    5,133
    Likes Received:
    122
    Saftly is a special word we use down south when we cant spell the real one :yes:
    #16
  17. baz1
    Offline

    baz1 New Member

    Joined:
    Sep 24, 2007
    Messages:
    23
    Likes Received:
    0
    turned out to be faulty front lambda sensors. The front two. The guy at the garage quoted my £400 including fitting!!

    Is it me or is this far too expensive?
    #17
  18. paddy
    Offline

    paddy Audi=No fault code, no idea

    Joined:
    Feb 6, 2008
    Messages:
    5,133
    Likes Received:
    122
    Baz
    See my post above....... number 8 !!
    #18
  19. baz1
    Offline

    baz1 New Member

    Joined:
    Sep 24, 2007
    Messages:
    23
    Likes Received:
    0
    Was that 200 quid for both of the front lambdas?
    #19
  20. edition
    Offline

    edition Active Member

    Joined:
    Nov 1, 2007
    Messages:
    1,428
    Likes Received:
    0
    they look easy enough to get to......


    How much are they each?
    #20
  21. FactionOne
    Online

    FactionOne Administrator Staff Member Administrator

    Joined:
    May 23, 2004
    Messages:
    3,128
    Likes Received:
    95
    [​IMG]

    Sorry, couldn't resist!

    //R
    #21
  22. voorhees
    Offline

    voorhees Moderator Staff Member Moderator

    Joined:
    Dec 18, 2005
    Messages:
    15,018
    Likes Received:
    1,145
    Rob...your barred
    #22
  23. FactionOne
    Online

    FactionOne Administrator Staff Member Administrator

    Joined:
    May 23, 2004
    Messages:
    3,128
    Likes Received:
    95
    That's not very mice. There's no need to be so catty.

    But yeah, I guess I've been a little Photoshop-happy this weekend. I'll give it a rest, for now... :)

    Rob.
    #23
  24. paddy
    Offline

    paddy Audi=No fault code, no idea

    Joined:
    Feb 6, 2008
    Messages:
    5,133
    Likes Received:
    122
    Baz
    My invoice was for one but it was only £74+vat...the rest (£149) was "investigation" as they put it...
    #24
  25. baz1
    Offline

    baz1 New Member

    Joined:
    Sep 24, 2007
    Messages:
    23
    Likes Received:
    0
    which audi was that paddy?
    #25
  26. paddy
    Offline

    paddy Audi=No fault code, no idea

    Joined:
    Feb 6, 2008
    Messages:
    5,133
    Likes Received:
    122
    That was for my A3, 3.2 DSG 2004.
    I used Audi Guildford.

    I just checked the invoice and the part was actually £93 but i got 15% discount because the old girl is over 4 years old ie: £79.14p.

    [​IMG]

    hope that helps...
    Last edited: Aug 30, 2009
    #26

Share This Page