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  1. #1
    Veteran Member Three Rings Burningcoals's Avatar
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    High Pitch Humming noise @ IDLE on my new RS3 - Video included

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    Ok, well I have a high pitch humming engine noise @ idle that has been bothering me. I have decided to let the interwebs keyboard diagnose it lol. If you walk over to your passenger side front wheel do you hear a similar noise on stock RS3 @ idle?

    It's pretty annoying at times, after a hard drive its a bit more loud then normal. Sometimes I think its just the turbo being loud, or some secondary air system. But before I mod the car I want to make sure there is nothing strange about it.

    It goes away anything above idle, also when I turn my car off there is a winding down noise also. Hoping its just turbo and not some bearing, rotating assembly malfunction.

    Car runs really strong, tomorrow I will have a dragy to test out. Also car has not eaten a lick of oil, I have had this sound since day one. If you open the hood, it sounds like its coming straight from the top of the head or in that area.

    https://youtu.be/7mVkbDB1x5Q


    https://youtu.be/HW4Yl7-4I2Q

    I have an appointment @ Audi for this exact noise, mainly I just want to see another RS3 have it, if its just my car then that's unfortunate and will have to be diagnosed.
    • Current: 2018 Audi RS3 - 2000 Audi S4 3L
    • B5 S4 FATS TiAL R770 2.06 FATS VIDEO
    • B5 S4 Pump GAS 5.7 60-130 92oct + Meth
    • B5 S4 4.7 100-200kmh 92oct + Meth

  2. #2
    Established Member Four Rings
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    Does it do it only when vehicle is up to temp? Or does it do it when cold as well?

  3. #3
    Established Member Three Rings
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    I honestly don't think there's anything wrong. It's very hard to judge what a car should sound like when it's making a rhythmic noise especially if you stand by the hood. The best thing to do is compare it to other RS3's

  4. #4
    Established Member Four Rings
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    Is that the faster sport idle or just regular

  5. #5
    Veteran Member Three Rings Burningcoals's Avatar
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    Quote Originally Posted by lalalaprise View Post
    Does it do it only when vehicle is up to temp? Or does it do it when cold as well?
    When itís up to temp.
    • Current: 2018 Audi RS3 - 2000 Audi S4 3L
    • B5 S4 FATS TiAL R770 2.06 FATS VIDEO
    • B5 S4 Pump GAS 5.7 60-130 92oct + Meth
    • B5 S4 4.7 100-200kmh 92oct + Meth

  6. #6
    Veteran Member Three Rings Burningcoals's Avatar
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    Quote Originally Posted by Potatohead_RS3 View Post
    Is that the faster sport idle or just regular
    Should be just regular. My car was off and in park, then was turned on.

    The question is. Does anyone elses RS3 make the same noise?
    • Current: 2018 Audi RS3 - 2000 Audi S4 3L
    • B5 S4 FATS TiAL R770 2.06 FATS VIDEO
    • B5 S4 Pump GAS 5.7 60-130 92oct + Meth
    • B5 S4 4.7 100-200kmh 92oct + Meth

  7. #7
    Veteran Member Three Rings Burningcoals's Avatar
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    Quote Originally Posted by OE2 View Post
    I honestly don't think there's anything wrong. It's very hard to judge what a car should sound like when it's making a rhythmic noise especially if you stand by the hood. The best thing to do is compare it to other RS3's
    Exactly! I am not looking for diagnosis. I am just looking to see if anyone else RS3 makes the same noise. It's super obvious. However, given that no one has yet to confirm their car has this sound, I am now leaning to its an issue with my car.
    Last edited by Burningcoals; 05-16-2018 at 12:19 PM.
    • Current: 2018 Audi RS3 - 2000 Audi S4 3L
    • B5 S4 FATS TiAL R770 2.06 FATS VIDEO
    • B5 S4 Pump GAS 5.7 60-130 92oct + Meth
    • B5 S4 4.7 100-200kmh 92oct + Meth

  8. #8
    Established Member Four Rings
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    Quote Originally Posted by Burningcoals View Post
    When itís up to temp.
    Pretty sure mine does this when I'm idling in park when the car is fully warm. Since you already made an appointment get it checked out anyway. If it's not normal...let me know lol

  9. #9
    Veteran Member Three Rings Burningcoals's Avatar
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    Quote Originally Posted by lalalaprise View Post
    Pretty sure mine does this when I'm idling in park when the car is fully warm. Since you already made an appointment get it checked out anyway. If it's not normal...let me know lol
    Dude, thats actually re-assuring that I am not alone! I will have tech listen to it.

    Any others have this sound? pretty easy to hear if you are in a quiet area. Would love for others to chime in. :)
    • Current: 2018 Audi RS3 - 2000 Audi S4 3L
    • B5 S4 FATS TiAL R770 2.06 FATS VIDEO
    • B5 S4 Pump GAS 5.7 60-130 92oct + Meth
    • B5 S4 4.7 100-200kmh 92oct + Meth

  10. #10
    Senior Member Three Rings Canvasoso's Avatar
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    Doesn't sound weird to me.
    Current: 2018 RS3 / Dynamic / Technology / Carbon / 7HE / Daytona Gray / Alu Optics
    Previous: 2013 B8.5 S4 - 1998 B5 A4 1.8TM - 2002 B6 A4 2.0TM - 2006 B7 A4 2.0TQM

  11. #11
    Established Member Four Rings
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    Quote Originally Posted by Canvasoso View Post
    Doesn't sound weird to me.
    Ditto!


    Sent from my iPhone using Tapatalk

  12. #12
    Veteran Member Three Rings Burningcoals's Avatar
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    Cool

    I can hear it in the cabin when not in sport mode at a stop or super low roll, basically anytime the car is at its lowest RPM. Guess its just time to never ever leave sport mode lol. Any RPM above its lowest RPM and it goes away. Such a strange sound, I think my ears are just sensitive to it. I need a loud exhaust so I never hear it, maybe even an intake.

    But for my sanity, I need to in person find another RS3 with it, or hear it on a video, then this can be laid to rest.
    • Current: 2018 Audi RS3 - 2000 Audi S4 3L
    • B5 S4 FATS TiAL R770 2.06 FATS VIDEO
    • B5 S4 Pump GAS 5.7 60-130 92oct + Meth
    • B5 S4 4.7 100-200kmh 92oct + Meth

  13. #13
    Established Member Four Rings
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    I checked mine last night for you... your hum is a lot louder and I definitely don't hear it inside the car... let us know what dealer says.

  14. #14
    Established Member Four Rings
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    Did either of you have the a/c compressor on?

  15. #15
    Veteran Member Three Rings Burningcoals's Avatar
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    Quote Originally Posted by Potatohead_RS3 View Post
    Did either of you have the a/c compressor on?
    I have tried both with and without AC on, All drive modes, and combinations of transmission modes.

    Plus I talked to Hank @ Iroz who has listened to many a 5pot, plus other techs and it is NOT normal and needs attention. Just my luck. I will keep people informed, but all plans to mod the car are on hold. And really I don't know how Audi will diagnose this, could be anything, bearing, cam, bottom end top end, I think it sounds like its coming from the top of the head. I was hoping it was coming from the turbo.

    Saved for a year, basically my dream car atm and love it. Then this.. booo!! Grrrrr


    Here is another video.

    https://youtu.be/pJSFz4WDhLA
    Last edited by Burningcoals; 05-17-2018 at 11:19 AM.
    • Current: 2018 Audi RS3 - 2000 Audi S4 3L
    • B5 S4 FATS TiAL R770 2.06 FATS VIDEO
    • B5 S4 Pump GAS 5.7 60-130 92oct + Meth
    • B5 S4 4.7 100-200kmh 92oct + Meth

  16. #16
    Veteran Member Three Rings Burningcoals's Avatar
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    UPDATE: While we were able to see that none of the other Audi's RS3's have this sound, there is nothing Audi can do about it. From their perspective unless code, there is no issue. And it would be a witch hunt.

    So really, I have to decide if I want to live with it and or sell it. Next thing to see is if she is down on power or has any issue that is related to this sound.

    I have a dragy that I just got, just need to find a flat road that I can do some launches and see where my car is speed wise. The Audi tech, refused to acknowledge the sound at all, however the service adviser said he hears it. They just told me don't mod and drive it like you stole it and have fun and if shit breaks they can fix it.

    Other Audi's have this sound but mine is about 10octaves louder. Loud enough to hear in the cabin at a stop.

    I love being the guy that gets the ONE RS3 that exhibits an issue that no one literally has experienced. :)

    I guess this thread might be helpful if another RS3 experiences this issue.
    Last edited by Burningcoals; 05-18-2018 at 01:11 PM.
    • Current: 2018 Audi RS3 - 2000 Audi S4 3L
    • B5 S4 FATS TiAL R770 2.06 FATS VIDEO
    • B5 S4 Pump GAS 5.7 60-130 92oct + Meth
    • B5 S4 4.7 100-200kmh 92oct + Meth

  17. #17
    Established Member Four Rings
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    If it was my car I would just enjoy it and if it breaks, oh well. To me it just sounds like some type of harmonics. If it's a defective bearing in the a/c compressor or alternator or something it will get worse fairly quickly.

  18. #18
    Veteran Member Three Rings andru1313's Avatar
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    Sounds pretty normal to me. Sounds like the direct injection system. Maybe I am not hearing the humming you are refering to. I can take a video of my motor running if you want to compare notes. Just let me know. I hate hearing something thinking that its an issue. Drive me NUTS!!!

  19. #19
    Veteran Member Three Rings Burningcoals's Avatar
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    Quote Originally Posted by andru1313 View Post
    Sounds pretty normal to me. Sounds like the direct injection system. Maybe I am not hearing the humming you are refering to. I can take a video of my motor running if you want to compare notes. Just let me know. I hate hearing something thinking that its an issue. Drive me NUTS!!!
    LOL. Only a couple times in my life have people literally stared at me dumbfounded like I am crazy. And today was one of those times with 4 Audi techs looking at me like I am crazy! One of them was I worked here 15 years and certified R8 specialist, and there is no abnormal sound. Even with another RS3 sitting next to it not making the noise. I must have superhuman hearing I guess :P

    So convincing Audi is definitely not going to happen. The only thing they would be convinced by is a code.

    Like I said, thread is here for info in case someone else encounters, and well see how this goes for another 2-5K miles. I bought the car to track and mod, so I am definitely not giving up on that, else I would just sell it.
    • Current: 2018 Audi RS3 - 2000 Audi S4 3L
    • B5 S4 FATS TiAL R770 2.06 FATS VIDEO
    • B5 S4 Pump GAS 5.7 60-130 92oct + Meth
    • B5 S4 4.7 100-200kmh 92oct + Meth

  20. #20
    Veteran Member Three Rings Burningcoals's Avatar
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    She might be a bit noisy, but no problem moving on a heatsoaked hot day. I need to find a flat road in mexico I can stretch it out to 1/4 mile.

    Little Dragy fun with RS3 by Shaun, on Flickr
    • Current: 2018 Audi RS3 - 2000 Audi S4 3L
    • B5 S4 FATS TiAL R770 2.06 FATS VIDEO
    • B5 S4 Pump GAS 5.7 60-130 92oct + Meth
    • B5 S4 4.7 100-200kmh 92oct + Meth

  21. #21
    Stage 2 Banner Advertiser Three Rings SupremePower1's Avatar
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    You got a fast car!
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  22. #22
    Registered Member One Ring
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    Quote Originally Posted by Burningcoals View Post
    UPDATE: While we were able to see that none of the other Audi's RS3's have this sound, there is nothing Audi can do about it. From their perspective unless code, there is no issue. And it would be a witch hunt.

    So really, I have to decide if I want to live with it and or sell it. Next thing to see is if she is down on power or has any issue that is related to this sound.

    I have a dragy that I just got, just need to find a flat road that I can do some launches and see where my car is speed wise. The Audi tech, refused to acknowledge the sound at all, however the service adviser said he hears it. They just told me don't mod and drive it like you stole it and have fun and if shit breaks they can fix it.

    Other Audi's have this sound but mine is about 10octaves louder. Loud enough to hear in the cabin at a stop.

    I love being the guy that gets the ONE RS3 that exhibits an issue that no one literally has experienced. :)

    I guess this thread might be helpful if another RS3 experiences this issue.
    FWIW, I have the exact same noise. Sort of a harmonic that I can hear in cabin at idle. I have audio recordings for my tech as well. Only hear it when engine up to 200 degrees. Independent of AC on or off, drive mode, etc. Could be a heat shield vibrating but it's weird it does not occur on throttle at all. I also have a squeaky belt or pulley that happens under the same conditions, so maybe a noisy pulley/failing bearing. I will post a follow up once I have it looked at.
    2018 RS3. Stock for now...

  23. #23
    Established Member Two Rings
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    The noise does seem to be out of the ordinary but if the car functions fine and you have years of warranty left, I'll probably just let it go.

  24. #24
    Established Member Four Rings comingabriel's Avatar
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    I have a stethoscope like gadget to help find the focal most noise on cars.



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