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  1. #1
    Established Member Two Rings mrleftlane's Avatar
    Join Date
    Jul 05 2007
    AZ Member #
    19309
    My Garage
    2003 Audi A4 1.8T Avant Manual
    Location
    Toronto, Ontario

    Engine Whistle Under Load

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    After my MP3 player went dead, I had no choice but to listen to the sound of my car last night. While engaging in some…um…"thifty" driving, I’ve noticed that under "heavy load" I hear this bizarre whistle coming from the engine bay consistent in volume and duration for the pressure and duration of me mashing the gas pedal . At first I thought that it was my Blackberry on the ashtray that was creating interference with the speakers, but after leaving it at home and blasting down the straight to turn one (aka the corner just down the street), I can confirm that it is definitely coming from the engine bay.

    • No CELs
    • No loss of power
    • A quick glance into the engine bay shows that everything seems to be connected. (I could not see my Turbosmart diverted from above so I cannot confirm a secure connection but will in the next day or so
    • Does not happen under casual or medium pedal input, only spirited input

    Does anyone know what might be wrong?
    **With all the noob mods I've bought, I've learned that cars are just motorcycles with training wheels. Married men can buy whatever we want as long as one of the purchases is a comfortable couch**
    2007 Ducati 1098
    2007 Yamaha R1
    1999 Yamaha R1

  2. #2
    Veteran Member Four Rings Tgr_Clw's Avatar
    Join Date
    Jul 20 2005
    AZ Member #
    7305
    My Garage
    2003 Audi A4 1.8TQM
    Location
    Toronto, Canada

    Re: Engine Whistle Under Load

    Nothing's wrong. It's called turbo whine.
    Appearance: OEM+
    Interior: B6 S4 Recaro Seats
    Performance: MTM Stage 3 / Milltek Exhaust+Milltek HFC / JJ TIP / ASP FMIC / SB FE SS
    Suspension: Vogtland Coilovers / HSport S4 Sways
    Braking: Stoptech 332 BBK
    Wheels/Tires: BBS CH 18x8.5, ET35 / GY Eagle F1 GSD3 235/40/18

  3. #3
    Established Member Two Rings Jimbobdaga's Avatar
    Join Date
    Mar 11 2008
    AZ Member #
    26330
    Location
    Leominster, MA

    Re: Engine Whistle Under Load

    I love that noise :)
    NOW: 2012 A4 2.0t | Black on Black | stock for now .. more to come :)
    PAST: 2004 A4 1.8t | Black on Black | APR Stage 1+ | Audi Sport Suspension| Neuspeed Exhaust | Ecode Headlights | Forge DV

  4. #4
    Veteran Member Four Rings sambrody44's Avatar
    Join Date
    Dec 28 2007
    AZ Member #
    23688
    My Garage
    2002 Audi 1.8TQM
    Location
    Woodstock, NY

    Re: Engine Whistle Under Load

    I don't believe I've ever said this but... NEWB.
    "set your mindstate free"

    2002 Audi A4 1.8TQM
    Lowered by Stasis SS (finally) On 19" ADR M-Classics.
    Bailey's DV
    Neuspeed Short Shift
    Southbend FE SS Clutch with AWE Flywheel (13lbs lighter then stock)

    Buy my photos here.

  5. #5
    Established Member Two Rings mrleftlane's Avatar
    Join Date
    Jul 05 2007
    AZ Member #
    19309
    My Garage
    2003 Audi A4 1.8T Avant Manual
    Location
    Toronto, Ontario

    Re: Engine Whistle Under Load

    Hey Tgr_Clw, not the turbo whine, this odd whistle has only appeared last night and drowns out all other engine and turbo sound. This whistling thing is ridiculously loud and after trying to figure it out all day, it now has the sound of a pop at the end of it. It sounds like I have a drawf referree trapped under my hood trying to call a flag on the play then snapping bubble wrap when he's done

    This is my 11th turbo charged car and I am quite familiar with the sound of turbo spool but I have never heard this sound before on any of them including my triple rotary Rx-7...not a turbo newb
    **With all the noob mods I've bought, I've learned that cars are just motorcycles with training wheels. Married men can buy whatever we want as long as one of the purchases is a comfortable couch**
    2007 Ducati 1098
    2007 Yamaha R1
    1999 Yamaha R1

  6. #6
    Veteran Member Four Rings alexza4's Avatar
    Join Date
    Apr 23 2007
    AZ Member #
    17513
    My Garage
    19-S5||22-GV70||14-RAM1500Hemi
    Location
    Maryland

    Re: Engine Whistle Under Load

    Quote Originally Posted by mrleftlane View Post
    Hey Tgr_Clw, not the turbo whine, this odd whistle has only appeared last night and drowns out all other engine and turbo sound. This whistling thing is ridiculously loud and after trying to figure it out all day, it now has the sound of a pop at the end of it. It sounds like I have a drawf referree trapped under my hood trying to call a flag on the play then snapping bubble wrap when he's done

    This is my 11th turbo charged car and I am quite familiar with the sound of turbo spool but I have never heard this sound before on any of them including my triple rotary Rx-7...not a turbo newb
    You have a boost leak my friend. Not a big one if its only under heavy load, but a leak nevertheless.
    2019 S5 3.0T
    2016 A5 2.0T Cab
    2015 S5 3.0T - SOLD
    2003 A4 QM Uni EFR 6758 on meth - SOLD :((
    2003 A4 GIAC KO4 - SOLD

  7. #7
    Veteran Member Four Rings Tgr_Clw's Avatar
    Join Date
    Jul 20 2005
    AZ Member #
    7305
    My Garage
    2003 Audi A4 1.8TQM
    Location
    Toronto, Canada

    Re: Engine Whistle Under Load

    Attend the GTG tomorrow at hwy 7/Yonge (Home Depot parking lot) at 8:30 pm. I'll have my vag-com and we can scan your car for codes.

    Quote Originally Posted by mrleftlane View Post
    Hey Tgr_Clw, not the turbo whine, this odd whistle has only appeared last night and drowns out all other engine and turbo sound. This whistling thing is ridiculously loud and after trying to figure it out all day, it now has the sound of a pop at the end of it. It sounds like I have a drawf referree trapped under my hood trying to call a flag on the play then snapping bubble wrap when he's done

    This is my 11th turbo charged car and I am quite familiar with the sound of turbo spool but I have never heard this sound before on any of them including my triple rotary Rx-7...not a turbo newb
    Appearance: OEM+
    Interior: B6 S4 Recaro Seats
    Performance: MTM Stage 3 / Milltek Exhaust+Milltek HFC / JJ TIP / ASP FMIC / SB FE SS
    Suspension: Vogtland Coilovers / HSport S4 Sways
    Braking: Stoptech 332 BBK
    Wheels/Tires: BBS CH 18x8.5, ET35 / GY Eagle F1 GSD3 235/40/18

  8. #8
    Veteran Member Four Rings jrau13's Avatar
    Join Date
    Mar 12 2006
    AZ Member #
    10784
    My Garage
    02 Mercedes ML, 04 Avant 1.8t
    Location
    Costa Mesa

    Re: Engine Whistle Under Load

    It sounds like your suction jet pump coming apart. Check this out http://www.audizine.com/forum/showth...t=suction+pump

    Have someone give it gas while you look at that part and it should start to come apart. You will see it pulling apart, if in fact this is the problem. I had the same thing happen.
    I'll keep my money,
    My Guns, My Freedom,
    & you can keep the CHANGE

  9. #9
    Veteran Member Four Rings n7plus1's Avatar
    Join Date
    Dec 19 2007
    AZ Member #
    23482
    My Garage
    2016 STI in WRBP / 2012 RDX SH-AWD w/Tech Package
    Location
    York, PA

    Re: Engine Whistle Under Load

    dentist drill?

  10. #10
    Veteran Member Four Rings alexza4's Avatar
    Join Date
    Apr 23 2007
    AZ Member #
    17513
    My Garage
    19-S5||22-GV70||14-RAM1500Hemi
    Location
    Maryland

    Re: Engine Whistle Under Load

    Quote Originally Posted by jrau13 View Post
    It sounds like your suction jet pump coming apart. Check this out http://www.audizine.com/forum/showth...t=suction+pump

    Have someone give it gas while you look at that part and it should start to come apart. You will see it pulling apart, if in fact this is the problem. I had the same thing happen.
    Yep, same here.
    2019 S5 3.0T
    2016 A5 2.0T Cab
    2015 S5 3.0T - SOLD
    2003 A4 QM Uni EFR 6758 on meth - SOLD :((
    2003 A4 GIAC KO4 - SOLD

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