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2.0TFSI Rattling Acceleration

Discussion in 'A3/S3/Sportback (8P Chassis)' started by skyfire, Aug 3, 2009.

  1. skyfire
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    skyfire New Member

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    New to this forum and Audi.....

    Bought a new A3 2.0TFSI Sport in May. Its a really great car to drive, but there is one thing thats bugging me.

    The engine is quite noisy at times, and when accelerating through the approx. 2200-2800 band there is a metallic rattling noise. With the windows closed its more of a grating/clicking noise, but windows down, much louder and 'tinny'. Only occurs when accelerting, stops when you hold it at a fixed rev. in that band. Also on a cold start for the first 30 seconds the rattling is even louder and at a lower rev speed (about 1500 upwards). Really sounds deisel at this point, even a bit embarrassing for a new car.

    Its done it from the start. Took it back to the dealer after 100 miles, technician told me that he 'hadn't heard that before' and it was 'probably the exhaust'. Booked it in, they chaged the cat. and the turbo ('cos they couldn't unbolt the two). Took it home but it sounded exactly the same.

    Booked it in again for a couple of days for them to drive and listen to, they agreed that they could hear 'something' but told me they needed to wait until they had another A3 of the same engine in to prove it wasn't normal. 5 weeks later and I haven't heard anything.

    Is this normal?
    Does anyone else own a rattly (or quiet) 09 plate 2.0T A3?
    Opinions and advice appreciated!

    Thanks
    C
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  2. AuldReekie
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    AuldReekie Member

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    Difficult to accurately diagnose over t'internet, but aside from the usual DMF problems I would suggest that you get them to check/investigate the bearings (schinfs?) on the big ends/conrods. I have heard that when one of these fails it replicates the exact symptoms as you report.

    HTH
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  3. paddy
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    paddy Audi=No fault code, no idea

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    Sounds to me like its pinking but then a mechanic worth his salt would have picked that up straight away so unlikely.
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  4. Khufu
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    Khufu Active Member

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    Is it possible to try a different dealer? Is it hard to tell exactly where the noise is coming from?

    The FSI engine does sound a bit like a diesel on starting but not as loud.
    #4
  5. G"MAN
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    G"MAN GONE LOW BUT GOING LOWER

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    mine does tyhe same thing mate but i have been told by a audi tech and a vw tech that the clicking sound is the vacume system that all fsi and t-fsi engins have have and they told me that if you cant here it clicking then the engine aint running right.. as for it being really loud when cold its just the engine warming up and does go away after about 5 min. so all i can say is wouldnt worry about it..

    hope that helps.
    G
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  6. skyfire
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    skyfire New Member

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    Cheers for the opinions. A couple of thoughts:

    Surely not something I need to consider for a brand new car is it? (unless rather than worn its a fault with bearings?)


    Do you get a clicking all the time or just at similar rev band as me?

    Interesting that when I took the car back first time and took one of the technicians for a drive he said it didn't sound right. This has got me to believe there is something wrong...

    Do you reckon some cars 'click' louder than others?

    Seeing as its all under warranty I will probably pursue the garage until they can convince me its okay!

    Thanks
    C
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  7. AuldReekie
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    AuldReekie Member

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    Mate, do not discount it on the basis of your car being new. The car I was referring to only had completed 5k and the fault was found to be from new at the factory.

    Again, purely a suggestion.
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  8. G"MAN
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    G"MAN GONE LOW BUT GOING LOWER

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    It does click loud to start with when its cold but as I said when it gets warn it goes a little more quite but it does click all the time. I just read your first post again and as for the loud tapping on aceleration it don't sound right. The engines them self are a loud engine but they shouldn't sound like a bag of nails..

    G
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  9. 10blazin
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    10blazin HYPERDRIVE NEEDED

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    cant you record it and post it online .....
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  10. skyfire
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    skyfire New Member

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    Give me a few days and I'll try and record it.
    Tried it with my camera the other day but didn't seem to work.

    C
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  11. skyfire
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    skyfire New Member

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    Tried to record the engine sound but failed so gave up.

    I have however been back to the dealers to have a drive in some other A3's...

    Firstly we took out a 3yr old 2.0T that had done about 40k. Acceleration straight after a cold start up was quiet, and the engine sounded smooth throughout all rev speeds.

    Next took out a brand new 2.0T that they had delivered a day or so earlier with 10miles on the clock. The cold start and then acceleration had no signs of any metallic rattly noise, nore did driving, then after a mile or so the rattly clicky sound started to sound occasionally in the same 2200-2800 band as mine, and then after a while it was doing it more or less on all accelerations - but not as loud as mine.

    Well thats basically blown any chance of getting anything done on warranty, but does seem to suggest its a feature of a new 2.0T engine. Some new part or something? I've left the garage to contact Audi and see if they have had any similar feedback. I'd be surpised if I was the only one...

    C
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  12. BigStig
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    BigStig New Member

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    Found this thread from a Google search...

    I have a US 2009 A3 2.0 TFSI DSG, non-Quattro. 1/09 build date. I've had the car for about two weeks now, and have 441 miles on it right now. Yes, 4-4-1. Not even broken-in. I get this same noise. From 2000-2800 RPM, in any gear, louder when cold but still there when warm. Like nails in a coffee can. Or like a failing CVT joint (if you've ever heard one of those). Or almost like a loose heat shield somewhere. I can't hear it at all with the windows rolled up. But I can if they're down - especially if I'm accelerating next to a wall or something where the engine sounds are reflected. It sounds pretty bad in that case.

    It doesn't do it if I blip the throttle when parked. Nor does it do it if I slip it into N and blip while driving. It's only when under moderate acceleration between 2-2.8k. Does it in 'D', 'S', and when manually shifting. In any gear. It seems to go away by 3k, though I haven't pressed much further than that because my A3 is still brand new and I'm trying to break it in correctly.

    I have not yet contacted the dealer because I'm new to Audi/VW engines and wasn't sure if this was normal. I was planning on it soon, but wanted to see if others had this problem.

    I will be very interested to know what this is and if you get this fixed.
    Last edited: Aug 26, 2009
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  13. BigStig
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    BigStig New Member

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  14. Dines
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    Dines Ex-Corrado G60 Nut

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    Mine does this too on start up - the guys at work keep winding me up that I was sold a diesel with different badges...

    The other 2.0T FSI's I test drove did it as well; but it still bugs me...
    #14
  15. aquaanox
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    aquaanox New Member

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  16. a3_dan
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    a3_dan Member

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    That does not sound right!
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  17. xnox202
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    xnox202 Member

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    My mate's A3 has this sound aswell, and a friend's GTI. I don't know, but I'll find out if I get an aftermarket downpipe. As discussed, some people noticed the problem went with the dp replaced.
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  18. leach76
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    leach76 Member

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    i would be back to the dealers or get someone else to rev it while you get the bonnet up,it sounds like something is loose which it resonating more at those revs,maybe a bracket but then again could be a tensioner or something and better to be safe than sorry
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  19. MarsinightS3
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    MarsinightS3 New Member

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    I had a similar noise going from 2800-3000 RPM it was the heat shield that protects the CV joint from the Turbo or something like that..
    it had cracked and would make that noise becuase it was hitting my down pipe , afte I replaced the heatshield the noise was gone...
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  20. Ads
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    Ads License to drive

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    I had the same noise, but it was on my Pug 206 Gti.
    Turned out to be the heat shield by the manifold, or was it the engine cover??? Can't remember now. Anyway, they swapped it but noise was still there. In the end they squirted some heat resistant sealant soemwhere between the bit that was making the noise and the engine and problem solved. No more nosie.
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  21. xnox202
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    xnox202 Member

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    ^^ Tell me more about it. So this crack actually happens while under 100 miles on the clock? I don't think so though. :unsure:
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  22. keydoh
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    keydoh New Member

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    Hi, I've got the same problem on my A3 2.0T DSG ('09). A good friend of mines an experienced Audi mechanic and he's struggled to fix the problem. The cars had 2 new exhaust systems inc CAT, heat shields removed etc. They've compared 2 new 2.0T cars at the garage and the DSG makes the noise, the manual doesn't. They think the exhaust system resonates between 2300-2500rpm which is great as thats where the engine works under normal driving. As previously mentioned this problem exists on all VW group DSG cars.

    I'm interested to know if anyone fixed the problem by replacing the down pipe with an aftermarket replacement?
    #22
  23. Shane.
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    Shane. Member

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    Mine and my mates have a very quiet ticking notice which a mechanic told us was the injectors (if you listen closely you can detect a sequential pattern) but it's not that loud
    #23
  24. holderd
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    holderd Member

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    Well this kind of makes me feel a little better. I have the 102ps 1.6 (I know I know- show off) and it makes a similar noise to the one described. The best time to hear it is when I'm putting the car under load and opening the throttle fully (between 2-3000 rpm) like when I try and accelerate up a hill in one too higher gear. If I close the throttle and maintain the engine speed the noise goes away which points straight at fueling in my not so expert opinion.
    Its quite interesting as the BSE engine in mine is an 8V unit and very different (and much older in origin) than the FSI lumps you guys are talking about...
    #24
  25. Cmw9
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    Cmw9 Member

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    My a3 quattro dsg makes this noise too. I want to fit an induction kit but worried it will enhance the noise
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  26. sliced
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    sliced Drive safe, stay alive.

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    Mine did that too, after a full service and a stage 2 (remap,intake,exhaust) it was gone 😋
    #26
  27. Cmw9
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    Cmw9 Member

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    Sounds really bad for an expensive car! Expect it from a corsa. What intake did you go with?
    #27
    sliced likes this.
  28. sliced
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    sliced Drive safe, stay alive.

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    Went for revo, which is exactly the same as the pipercross version of it.
    The older a3 2.0t intakes won't fit on the facelift a3, but I believe it shares the same intake as the scirocco tsi / golf mk6 gti
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  29. Cmw9
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    Cmw9 Member

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    What pipercross venom or something else? I have a facelifted a3 2011. I was looking at evoms
    #29
  30. sliced
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    sliced Drive safe, stay alive.

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    Only heard good stuff about evoms, make sure its called the 2.0TSI kit, as thats what they call it in america.
    #30
  31. Cmw9
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    Cmw9 Member

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    Yeah in the pictures of it the maf port is in the wrong place
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