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

Flapping/slapping noise from front end.... Then car goes crazy.

Discussion in 'A3/S3 Forum (8L Chassis)' started by Dani_B19, Aug 5, 2011.

  1. Dani_B19

    Dani_B19 Audi-sports own special child.

    Joined:
    Nov 9, 2008
    Messages:
    8,842
    Likes Received:
    296
    Morning gents.

    Set off to work this morning, all was fine, got up onto the main road thats just been resurfaced, drove along it and noticed that there was a flapping/slapping noise coming from the front end, not massively loud but loud enough to hear, pulled out of a junction and put fot down and the car started to splutter, dump valve was around 0psi mark but was fluttering/flickering, revs were all over the place, pulled over and car was wanting to die. Turned engine off, left it 2 mins and fired back up, all was fine, car fired up and ran smoothly, boosted fine etc.
    Anyone any ideas?
     
  2. Advert Guest Advertisement


  3. Syvo

    Syvo IF IN DOUBT GO FLAT OUT

    Joined:
    Jan 20, 2011
    Messages:
    1,338
    Likes Received:
    22
    sounds like limp mode n75 valve possibly
     
  4. Dani_B19

    Dani_B19 Audi-sports own special child.

    Joined:
    Nov 9, 2008
    Messages:
    8,842
    Likes Received:
    296
    What about the noise though?
     
  5. Syvo

    Syvo IF IN DOUBT GO FLAT OUT

    Joined:
    Jan 20, 2011
    Messages:
    1,338
    Likes Received:
    22
    hmm im a bit unsure with the noise issue.
     
  6. s3dave

    s3dave TFSI Hybrid
    Supporter

    Joined:
    Nov 11, 2009
    Messages:
    10,110
    Likes Received:
    736
    Loose chippings caught in the tread?
     
  7. Dani_B19

    Dani_B19 Audi-sports own special child.

    Joined:
    Nov 9, 2008
    Messages:
    8,842
    Likes Received:
    296
    Yeah thats what i thought about the noise but its weird how when i stopped then started again the noise went away! Need to scan it when i get in but its bafflin how chippins can effect it.
     
  8. Dani_B19

    Dani_B19 Audi-sports own special child.

    Joined:
    Nov 9, 2008
    Messages:
    8,842
    Likes Received:
    296
    Just to add to this.
    The cars got a loud tapping/clicking noise comig from the back of the engine/exhaust manifold. Any ideas on what t could be?
     
  9. Dani_B19

    Dani_B19 Audi-sports own special child.

    Joined:
    Nov 9, 2008
    Messages:
    8,842
    Likes Received:
    296
    Just to add to this.
    The cars got a loud tapping/clicking noise comig from the back of the engine/exhaust manifold. Any ideas on what t could be?
     
  10. coatesy

    coatesy poking badgers with spoons

    Joined:
    Oct 12, 2010
    Messages:
    1,920
    Likes Received:
    280
    does this noise happen as soon as the car is turned on or when its been running for about five mins ?
     
  11. Dani_B19

    Dani_B19 Audi-sports own special child.

    Joined:
    Nov 9, 2008
    Messages:
    8,842
    Likes Received:
    296
    Tbh ive only noticed it when the cars been running! What you got in mind mate? Cam chain?
     
  12. coatesy

    coatesy poking badgers with spoons

    Joined:
    Oct 12, 2010
    Messages:
    1,920
    Likes Received:
    280
    i don't really know mate i know feck all about engines lol but my T sport after its been running for about 5 mins starts to tick. i know this is going to sound strange but i got told that 1.8t engines make like a ticking noise when there not ran on fuel like v power or super unleaded. i think its complete bull tbh.

    you say your ticking is coming from the back ill have to have a listen to mine because i though my noise was coming from the front another stupid thing couldn't it just be the spark plugs working away if its at the back of the engine? again i say i don't have a clue what im on about im just using common sense.
     
  13. Y83OLK

    Y83OLK Hulk Smash!

    Joined:
    Sep 6, 2009
    Messages:
    841
    Likes Received:
    5
    cracked manifold, turbo housing/ loose egt union?.. does the noise increase in volume/ tempo with engine revs?.
    ..may explain why it goes when cooled down.
     
  14. coatesy

    coatesy poking badgers with spoons

    Joined:
    Oct 12, 2010
    Messages:
    1,920
    Likes Received:
    280
  15. Dani_B19

    Dani_B19 Audi-sports own special child.

    Joined:
    Nov 9, 2008
    Messages:
    8,842
    Likes Received:
    296
    Was thinking cracked manifold, will check the egt probe.

    Coatesy mine does sound like that but louder, ill try to get a video up from the back of the noise.
     
  16. Dani_B19

    Dani_B19 Audi-sports own special child.

    Joined:
    Nov 9, 2008
    Messages:
    8,842
    Likes Received:
    296
    Was thinking cracked manifold, will check the egt probe.

    Coatesy mine does sound like that but louder, ill try to get a video up from the back of the noise.
     

Share This Page