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  1. #1
    Established Member Two Rings cwill401's Avatar
    Join Date
    Jun 22 2014
    AZ Member #
    257411
    My Garage
    C5 A6
    Location
    coventry ,ri

    Strange fluttering flapping noise coming from intake manifold ?

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    I'm getting this fluttering flapping noise coming from the area around the intake manifold under load at low rpms during acceleration , it's brief but annoying , anybody have an idea what it could be ?


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  2. #2
    Established Member Three Rings Xplycko's Avatar
    Join Date
    Jan 13 2017
    AZ Member #
    390557
    My Garage
    01 A6 2.7t 6 Speed, Nissan Xterra, Jeep CJ7
    Location
    East Tennessee

    Sense it would be hard for an owl to get in there it may be a small finch.
    On a serious note your tb may have a broke return spring.

    Sent from my ALCATEL A564C using Audizine mobile app

  3. #3
    Veteran Member Four Rings Okedokey's Avatar
    Join Date
    Oct 24 2015
    AZ Member #
    363505
    Location
    Perth, WA

    Check if the noise correlates to the tapping of the evap solenoid near the manifold. If so this is normal.
    A4 B7 2.0T | HPFP upgrade + FMIC | BSR Stage II + exhaust + HFC | 3.0TFSI Throt. Body | RS4 fuel contr., PRV + S3 inj., G247 + DW300c | GFB DV+| 034 RSB + all arms and mounts | S4 brakes | B12 Bilstein suspension + H&R springs | RNS-E + Polk Audio PA D5000.5 - 4 x DB6502 + DB840DVC sub + Pioneer 10" sub | LEDs throughout | 19" Audi 2015 RS4 rims

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  4. #4
    Established Member Two Rings cwill401's Avatar
    Join Date
    Jun 22 2014
    AZ Member #
    257411
    My Garage
    C5 A6
    Location
    coventry ,ri

    its only on throttle low rpms with like a quick throttle blip , and more so when the engine is cold

    - - - Updated - - -

    Quote Originally Posted by Xplycko View Post
    Sense it would be hard for an owl to get in there it may be a small finch.
    On a serious note your tb may have a broke return spring.

    Sent from my ALCATEL A564C using Audizine mobile app


    def would have spotted the owl lol , ill check on the throttle body
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