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  1. #1
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    Question 2003 S3 - Haldex issue?

    Hi, Im reasonable new to the scene, previously owned a Mk1 Leon cupra. I purchased myself a late 03 S3 with 133k on the clock for £3250 with a PSI remap on. Excellent condition and spec, had a few tiny things that i wasnt happy with but ive soon sorted them over the 2 months ive owned it. My main issue now is the vibration im getting when accelerating through the seat/whole car when accelerating. It happens when accelerating hard 70++ in 5th and 6th and up through the gears when accelerating away hard... This is when im guessing the haldex is operating and this causing my vibration? Could it be a daft out of balance rear wheels? Ive had new tyres on the front which didnt change anything. Is there anything specific i should be checking? Other than that everything seems to function fine, goes like a rocket (a vibrating one at that) and is a dream.

    Any help at all would be great.

    Thanks

    cammage08

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  3. #2
    justarn's Avatar
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    hadlex engages only when the steering angle is plus 12 degrees left or right or if it senses the front wheels are slipping i think so unlikely... maybe the driveshaft/propshaft hitting the exhaust or summit!? odd that its only over 70 when ur on a racetrack of course!-)
    1999 apy s3, black & blue interior,dare bbs lm's, s2000 filter, relentless v3 manifold, relentless downpipe and sports cat, scorpion cat back system, stock dump valve, badger 5 v3 tip, bam rocker cover and push in coilpacks, toyosports fmic, amd stage 2+ remap 280.3bhp 263.9 lb/ft.

  4. #3
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    The haldex is will only kick in when it senses wheel spin, it can't predict on these first edition models. It will be running at 70 but only a very small amount of drag from the clutch pack, hence why it has to be disconnected when on a 2wd rolling road. The issue you have does not sound like haldex issues at all, possibly the rear diff or suspension issues. Maybe track rod ends or lower ball joints?
    Silver 2002 Audi S3 225 (BAM) since March 2011.

    Mods: Badger5 2.2 TIP, Jetex filter, PCV delete, 710 DV, N249 bypass, R-Tech Stage 1 TiV Remap, Audi TT Pedals, Red Dogbone, Polybushed tie arms. All silicone boost pipes, Michelin PS3s, Red V6 coil packs, MK4 flat blade conversion, retrofited cruise control.
    Currently: 254bhp - 276lb/ft (174bhp/ton) as of 11/02/2013 On V-Power

  5. #4
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    Probably teh rear propshaft damper, there is a thread on here already about it Audi 55reg quattro load vibrating at 2 thousands revs
    Have a read and see if it sounds like the same thing, if so tehy are about £230 fraom Audi but some dealers want to sell you a whole propshaft for about £1000. I am trying to source one just now for my 05 TDI quattro outwith the dealer network but it's not proving easy. If I get something I will post up details on teh thread above, so keep an eye out

  6. #5
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    Quote Originally Posted by Vorshprungdork View Post
    Probably teh rear propshaft damper, there is a thread on here already about it http://www.audi-sport.net/vb/a3-s3-s...ands-revs.html
    Have a read and see if it sounds like the same thing, if so tehy are about £230 fraom Audi but some dealers want to sell you a whole propshaft for about £1000. I am trying to source one just now for my 05 TDI quattro outwith the dealer network but it's not proving easy. If I get something I will post up details on teh thread above, so keep an eye out
    Thanks that would be great. Is it possible a thrown Rear wheel weight could cause a vibration to be felt through my seat? And yes of course the 70+ is on private roads/race tracks etc

  7. #6
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    The rear wheel bearing could do yeh, it would have to be wet bad though. Normally they become noisey on corners. The 2004 onwards haldex is different from ours too.
    Silver 2002 Audi S3 225 (BAM) since March 2011.

    Mods: Badger5 2.2 TIP, Jetex filter, PCV delete, 710 DV, N249 bypass, R-Tech Stage 1 TiV Remap, Audi TT Pedals, Red Dogbone, Polybushed tie arms. All silicone boost pipes, Michelin PS3s, Red V6 coil packs, MK4 flat blade conversion, retrofited cruise control.
    Currently: 254bhp - 276lb/ft (174bhp/ton) as of 11/02/2013 On V-Power

  8. #7
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    I have a complete S3 8L facelift propshaft for sale. The rubber dampers in the ends are fine in mine, but the middle bearing has worn. It could be stripped for parts to fix yours?

    Send me PM to discuss.

    See my advert on Ebay - Audi S3 8L facelift breaking spares Recaro seats BAM engine TT Quattro Golf Mk4 | eBay

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  9. #8
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    So I've had the car into Audi and its actually a misfire that I'm experiencing... Any ideas? They've apparently tried plugs and coil packs but no change?? I know my thermostat is stuck open and due for changing?

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    Quote Originally Posted by cammage08 View Post
    So I've had the car into Audi and its actually a misfire that I'm experiencing... Any ideas? They've apparently tried plugs and coil packs but no change?? I know my thermostat is stuck open and due for changing?
    It sounds like the coil pack loom then, a few people have had to replace them on here before, the heat cycles breaks down the cables casing over time.
    Silver 2002 Audi S3 225 (BAM) since March 2011.

    Mods: Badger5 2.2 TIP, Jetex filter, PCV delete, 710 DV, N249 bypass, R-Tech Stage 1 TiV Remap, Audi TT Pedals, Red Dogbone, Polybushed tie arms. All silicone boost pipes, Michelin PS3s, Red V6 coil packs, MK4 flat blade conversion, retrofited cruise control.
    Currently: 254bhp - 276lb/ft (174bhp/ton) as of 11/02/2013 On V-Power

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    Get the thermostat changed asap, as if its running cold it will over fuel like a ****er, and as above replace the loom and that will prob cure it dude
    ​Wish Rachel would let me have my TDI mk5 back


  12. #11
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    Not long after i got the car back from audi i gave the car a once over myself..... To find.... A bolt hanging from the propshaft where it joins the drive unit behind the engine!! I quickly contacted audi to explain my findings only to be told that this couldnt be my problem as its "deffinately a missfire". The lady who i spoke to said she would confirm it with the technician who had checked my car and get back to me. To me it seemed a little too obvious, a loose bolt on something that spins around is going to create a vibration im sure. So i sourced a replacement, had to travel to sheffield audi to collect the £1.74 bolt and replace it. The lady phoned back and confirmed i had an engine missfire!! Hmmmm So the bolt was changed by me, 4 hours in total and the vibration had gone. A snotty email was sent to Audi and a refund was soon on its way.....

  13. #12
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    Spot the loose bolt...
    Attached Images Attached Images

  14. #13
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    Quote Originally Posted by cammage08 View Post
    Not long after i got the car back from audi i gave the car a once over myself..... To find.... A bolt hanging from the propshaft where it joins the drive unit behind the engine!! I quickly contacted audi to explain my findings only to be told that this couldnt be my problem as its "deffinately a missfire". The lady who i spoke to said she would confirm it with the technician who had checked my car and get back to me. To me it seemed a little too obvious, a loose bolt on something that spins around is going to create a vibration im sure. So i sourced a replacement, had to travel to sheffield audi to collect the £1.74 bolt and replace it. The lady phoned back and confirmed i had an engine missfire!! Hmmmm So the bolt was changed by me, 4 hours in total and the vibration had gone. A snotty email was sent to Audi and a refund was soon on its way.....
    Sadly I am not surprised a dealer hasn't picked up on this... good work on spotting the bolt though...

    <tuffty/>
    Silver 2001 AMK S3. Silver alcantara interior... now with added powarrrrrrrr, torques. VAGCOM + KII-USB. >> My build thread...

  15. #14
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    Ahhem! My post 12th Sept ^^ not the damper obviously but I was in the right area was I not?
    I need a new username, clearly I am not an Audi Dork any more, at least no more than the average Audi Dealer at any rate

  16. #15
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    Quote Originally Posted by Vorshprungdork View Post
    Ahhem! My post 12th Sept ^^ not the damper obviously but I was in the right area was I not?
    I need a new username, clearly I am not an Audi Dork any more, at least no more than the average Audi Dealer at any rate
    Haha, Yep you was deffinately on the right path. I just carnt believe the cheek of them. They even wanted to investigate the supposed missfire further at an extra £200+ !! The car doesn't have a missfire....

  17. #16
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    Dealers have it in their power to completely ruin the ownership experience of any good car and somewhat surprisingly do so on a regular basis. Makes me wonder waht all the fuss is abiout full service history and all that, I'd much more prefer to know someone competent actually did the work
    Good luck with geting yours fixed, should be an easy one now!

 

 

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