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A few queries that are bugging me about my car

Discussion in 'A3/S3 Forum (8L Chassis)' started by DaveA3, Nov 24, 2010.

  1. DaveA3

    DaveA3 Audi A-Trizzle!

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    Hi All a couple of thing are bugging me about my car :think: and im looking for some guidance about these.

    Ok, the first one is when i start up my car all is good and fine but when i pull away for like the first 10 yards when i lift my throttle for the first time since starting it i hear like a spring release from underneath me like gearbox area n then i never hear it again. :wtf:
    Its only the first time i release the throttle after pulling away bit weird but i always wondered if it was meant to do that. Also if i pull away and accidently wheelspin after turning on the ignition (yesterday morning frost and my drive is on a slope) and i havent done the usual throttle n off again it makes that weird spring noise but louder.

    my second thing is relating to the wheel spin thing. My mate got some renault speed logging thing with his 197 and we were doing 0-60 :racer: tests on private roads. I was struggling to get grip in first gear with massive wheelspin and it was weird instead of the wheels going all the way around something was stopping them from spinning on the spot kinda like traction control but i dont have it. was weird. made a DUB DUB DUB sound after each spin. it wasnt like a knock but a kinda uncomfortable sound all the same.

    any ideas? ive tried to explain the best i can lol

    cheers :icon_thumright:
     
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  3. DJ_Troopa

    DJ_Troopa K1 Driver

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    LOL @ dub dub dub.

    Hope you get it sorted mate.
     
  4. bengal

    bengal Member

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    Am i right in thinking yours is an agu if so they do have a kind of traction control which isnt good at all imo it just makes a noise more than anything else the same as when the abs kicks in i think it works off the abs module. The reason i say agu is i have one and im not sure about the later engines lol. It should only kick in with wheelspin so if its doing it when its not then check your wheel bearings as when i had one go it did this all of the time as it gets confused by the play in the wheel and thinks its spinning when its not.
     
  5. DaveA3

    DaveA3 Audi A-Trizzle!

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    well it only does the wheel spin thing when its actually wheel spinning which is ok then i thought it was just on s3 agu's maybe i read wrong in the past. need to find out what thats called.

    also i wonder what that spring thing is on first pull away. ive tried searching but dunno what to type to find what im after
     
  6. DaveA3

    DaveA3 Audi A-Trizzle!

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    lol cheers dude
     
  7. Alex C

    Alex C Well-Known Member
    VCDS Map User Audi S3

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    didnt think S3s were ever factory fitted with AGU?
     
  8. bengal

    bengal Member

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    Im not sure on the spring noise tbh dude. If you mean you need to know what the traction control is called its edl so its white with a shaved head and goes around town centres smashing up shops and fighting with the police in the country its supposed to love so much pmsl.
     
  9. DaveA3

    DaveA3 Audi A-Trizzle!

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    no idea mate im gonna look up this EDL though

    LOL cheers :laugh:
     
  10. DaveA3

    DaveA3 Audi A-Trizzle!

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    someone mentioned to me it could be my dual mass flywheel apparently they make the noise when first starting etc when they are on their way out. anyone know of any other symptoms you get with these?
     
  11. Dane

    Dane Had an 8L S3, a B5 RS4 now I have a B8 S4

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    Me either I thought it was, Pre Facelift APY, Earlier facelifts AMK, Later facelifts BAM.
     
  12. DaveA3

    DaveA3 Audi A-Trizzle!

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    EDL

    Electronic Differential Lock (EDL) is a limited slip differential imitation - this is an electonic system that detects wheelspin via ABS sensors and applies brakes to spinning wheels. This results in the torque being transferred via open differentials to another wheel that has more traction.
    For example, the system brakes the wheel that is raised in the air and spinngin freely, and engine power goes to another wheel that is on the ground.




    ---


    in that case why the hell does it do anything when both wheels are losing grip? uneven suspension mate?
     
  13. Alex C

    Alex C Well-Known Member
    VCDS Map User Audi S3

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    thats what i thought, pretty sure too, but may be proved wrong
     
  14. DaveA3

    DaveA3 Audi A-Trizzle!

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    yeh werent sure where i read that in the past dont quote me on the s3 thing lol
     
  15. bengal

    bengal Member

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    Could be uneven suspension but due to the camber of the road rather than a fault with your car it could be that one wheel is still spinning faster than the other and its trying to even it out still. Wait till your in the snow it goes like mad then lol.
     
  16. DaveA3

    DaveA3 Audi A-Trizzle!

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    oh god i havent even thought of the snow thatll be interesting! well i have coilovers so might be the heights aswell perhaps i need to get the measuring tape out!
     
  17. DaveA3

    DaveA3 Audi A-Trizzle!

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    my mate said therrs a spring inbetween the flywheel and friction plates thats there to handle the movement is this what im hearing? if so why do it only do it when i first start the car and pull off?

    hmmz
     
  18. Alex C

    Alex C Well-Known Member
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    maybe its starter motor related...not sure. But if it only happens after you've just started the car then maybe its not retracting properly until you pull away
     
  19. DaveA3

    DaveA3 Audi A-Trizzle!

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    not a starter motor noise or anything just feels like a spring is being pulled then let go once. and onces it been let go so to speak its fine. its weird
     
  20. a3lucky

    a3lucky New Member

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    Preeeetty confident I can answer this one. The 'spring' noise is your ABS pump kicking in. Basically when you first pull away, due to the type of sensors used to measure wheel speed, the wheels have to rotate a few times before the ECU recieves a signal from them (this is their way of self testing.) So once the wheels have rotated and the speed sensors are confirmed working, the pump fires once for just a split second.
    When you are wheel spinning, the ECU reads a differential in wheel percentage slip between the front wheels and rear wheels, which kicks the ABS pump in again. Hence the noise. If you touch the brake pedal while spinning you will feel it 'juddering'.

    Mine also makes this noise, as does my old dears mk4 golf, as did my old mk3 golf VR6. Its perfectly normal.
     
  21. DaveA3

    DaveA3 Audi A-Trizzle!

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    cheers fella ill just ignore them both then :D makes me feel at ease a bit now!
     

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