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  1. #1
    Quattro180's Avatar
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    Air box noise/chatter ?

    I have recently been hearing a funny noise coming from the airbox/intake area? It sounds like a chatter or suction noise. It only does it when coming off the throttle. Car seems to be running ok but maybe using more fuel than usual? Any ideas?

    Cheers
    2004, A4 Avant SE, 1.9tdi 130. Gunna do s line or s4 body upgrade

    WANTED - sport suspension, front s line or s4 bumper, door blades, 17" s line 5 spoke alloys, rear roof spoler



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  3. #2
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    your diverter valve is broken or the little vac pipe on it has split

  4. #3
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    sorry to ask a stupid question but could you try and tell me exactly where the diverter valve and the little vac pipe is? i assume that it is attached to the air intake pipe?

    cheers
    2004, A4 Avant SE, 1.9tdi 130. Gunna do s line or s4 body upgrade

    WANTED - sport suspension, front s line or s4 bumper, door blades, 17" s line 5 spoke alloys, rear roof spoler



  5. #4
    Quattro180's Avatar
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    Video attachment



    Does this help?
    2004, A4 Avant SE, 1.9tdi 130. Gunna do s line or s4 body upgrade

    WANTED - sport suspension, front s line or s4 bumper, door blades, 17" s line 5 spoke alloys, rear roof spoler



  6. #5
    Az
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    My car does exactly the same! The previous owner had my car remapped so I always assumed it was due to that, and I've had loads of work done on the car by audi/vw specialists who have taken the car for a test drive after they had carried out any work on it and they have never said anything about it, so I assumed everything was as it should be. But now it's got me wondering too as soon as the diverter valve and pipe have been mentioned. My car wistles and sucks a lot under acceleration too.
    B6 A4 2.5 V6 TDi Quattro Sport

    Dolphin Grey I 210 BHP Remap I KW V1 Coilovers I 19"x9.5" all round BBS LM reps I RS4 Anti Roll Bar Kit I S4 Front and Rear Bumpers I Votex side skirts I S4 Aluminium Mirrors I S4 Rear Spoiler I S4 Style Tailpipes I USDM S4 licence plate blank I 6000k HID's I 18 SMD DRL's I Cupra R Splitter I Full RS4 black leather with white stitch optional bucket seat interior I RS4 black headlining I TT S Line FBMFSW I Aluminium Trim I Reverse camera I Full DIS I Cruise Control

  7. #6
    Quattro180's Avatar
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    It just doesn't sound right to me, unless anyone else knows different? The car seems to be using slighty more fuel aswell.
    2004, A4 Avant SE, 1.9tdi 130. Gunna do s line or s4 body upgrade

    WANTED - sport suspension, front s line or s4 bumper, door blades, 17" s line 5 spoke alloys, rear roof spoler



  8. #7
    Quattro180's Avatar
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    I am taking the car to a garage on Saturday and will report back
    2004, A4 Avant SE, 1.9tdi 130. Gunna do s line or s4 body upgrade

    WANTED - sport suspension, front s line or s4 bumper, door blades, 17" s line 5 spoke alloys, rear roof spoler



  9. #8
    Az
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    Good man!
    B6 A4 2.5 V6 TDi Quattro Sport

    Dolphin Grey I 210 BHP Remap I KW V1 Coilovers I 19"x9.5" all round BBS LM reps I RS4 Anti Roll Bar Kit I S4 Front and Rear Bumpers I Votex side skirts I S4 Aluminium Mirrors I S4 Rear Spoiler I S4 Style Tailpipes I USDM S4 licence plate blank I 6000k HID's I 18 SMD DRL's I Cupra R Splitter I Full RS4 black leather with white stitch optional bucket seat interior I RS4 black headlining I TT S Line FBMFSW I Aluminium Trim I Reverse camera I Full DIS I Cruise Control

  10. #9
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    Quote Originally Posted by Az View Post
    My car does exactly the same! The previous owner had my car remapped so I always assumed it was due to that, and I've had loads of work done on the car by audi/vw specialists who have taken the car for a test drive after they had carried out any work on it and they have never said anything about it, so I assumed everything was as it should be. But now it's got me wondering too as soon as the diverter valve and pipe have been mentioned. My car wistles and sucks a lot under acceleration too.
    my mapped 180 does the same,

    sounds almost like a distant police siren when i accelerate?

  11. #10
    Az
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    Quote Originally Posted by C17LJR View Post
    my mapped 180 does the same,

    sounds almost like a distant police siren when i accelerate?
    Haha! Yeah it does! I like it, and always get comments about it from mates and passengers, my step daughter calls it the jet car.
    B6 A4 2.5 V6 TDi Quattro Sport

    Dolphin Grey I 210 BHP Remap I KW V1 Coilovers I 19"x9.5" all round BBS LM reps I RS4 Anti Roll Bar Kit I S4 Front and Rear Bumpers I Votex side skirts I S4 Aluminium Mirrors I S4 Rear Spoiler I S4 Style Tailpipes I USDM S4 licence plate blank I 6000k HID's I 18 SMD DRL's I Cupra R Splitter I Full RS4 black leather with white stitch optional bucket seat interior I RS4 black headlining I TT S Line FBMFSW I Aluminium Trim I Reverse camera I Full DIS I Cruise Control

  12. #11
    Higgsy's Avatar
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    on the 1.8T the diverter valve is at the bottom of the engine behind the offside foglight, should have 3 hoses coming out of it, not too sure about the 2.5 though, if its goosed or a hose has split, you should be able to see it from there.
    2004 A4 Avant 190 (6) S'Line 1.8Tq | 18'' RS4s, GIAC Stage 1+, 007P, Miltek cat, ambient lights, Black Grill Mod, Jetex high flow filter, Gateway 100, Number Plate LEDs, DIS, Turbosmart 30psi Boost Gauge, 230bhp on a cold day!! much more to come next year!!

    Future Mods | Drilled discs, milltek exhaust, red stuff pads, coilovers, in other words ...... $$$$$$$$$$!!

  13. #12
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    Anyone else get this , my 130 does it , i had it into Audi and they said not to worry about it
    Ross, MK5 Golf - R19 DUB, Audi A6 C6 - R19 RRW

  14. #13
    marktdisport's Avatar
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    my standard 130 also does it......... just a noise of the turbo coming off full spool id say......
    A4 TDI 130 SPORT..
    now sold but still in the family, gone back in time to the cupra R again..

  15. #14
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    i have this sound too did not have it when i first got the car over two years back any one have a pic of a diverter valve and where it would be on tdi 1.9 so i can have a look ;-)

  16. #15
    rawtor51's Avatar
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    I was really worried about it to start with but Audi assured me I shouldn't worry about it, thay said some do it and some don't, they wouldn't turn away custom surely if somthing was wrong, so since then I don't take any notice of the noise, I was just curious to see how many other folk had the same.
    Ross, MK5 Golf - R19 DUB, Audi A6 C6 - R19 RRW

  17. #16
    Widemonkeys's Avatar
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    Mine used to do it all the time, now it's stopped but my car also constantly goes into limp mode
    02 A4 B6 1.9tdi Avant sport 130bhp, 18" RS4's, Cruise control, Armrest, Ambiant lights, LED number plate bulbs,Pressed number plates, rear RS4 ARB, blacked out grills.
    Wanted : S line front and rear bumpers , S4 lower grill, s4 door blades

  18. #17
    TDIPOWARRR

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    The tdi does not have a diverter valve.

    My tdi 130 does it as well, i've asked before and it seems many other people have it.

  19. #18
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    I suffer this too on my 2.5tdi 180 but I also get a louder air rush noise and a noisy turbo under load when it is playing up! I have been told by a Turbo specialst and that it could be a cat issue creating more back pressure and causinbg the egr valve to remain open and cause the chatter when I ease off the throttle!

  20. #19
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    Bro.Paul 2.5TDI Quattro Sport

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    sticky actuator on the turbo,

  21. #20
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    Mine has done this since I had a major service. Not been too worried about it, but if it's something to fix I will.
    Audi A4 TDi 130 Sport

  22. #21
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    Bro.Paul 2.5TDI Quattro Sport

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    we had a thread on this one a while back, its a sticking actuator valve thing, i had this on my car, so i swapped my whole turbo unit over with actuator and the problem was GONE! ended up being the actuator,

  23. #22
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    Ah sweet , gives me somthing to look at ,

    Thanks.
    Ross, MK5 Golf - R19 DUB, Audi A6 C6 - R19 RRW

  24. #23
    iyrix's Avatar
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    Yeah same, need to have a look t some point.
    Audi A4 TDi 130 Sport

  25. #24
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    this just started happening on mine last night when i reversed it into my parking space. Does anyone know if the actuator can be swapped without changing the turbo?

    J

 

 

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