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  1. #1
    Active Member One Ring
    Join Date
    Feb 02 2016
    AZ Member #
    368180
    Location
    Park City Utah

    Does anyone know what could cause this?

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    Car: 2006 Audi A4 2.0T 6MT Sedan

    Potentially Relevant Mods: Forge Diverter Valve, APR Chip, 034 High Flow Catalytic Converter, AutoTech HPFP

    When I am driving, some days the Traction Control, EPC, and Check Engine lights will all come on when I start up the car. The car feels normal until I get up to speed on the highway. Once I am at around ~50 MPH the car will tank in performance, if I am on flat ground going 50 MPH in 5th and I push the gas pedal in all the way the car barely accelerates. On an uphill at that speed it feels like I cannot accelerate at all. If I downshift a gear or two I can accelerate just a little bit. I really need to keep this car running healthy as I rely on it to commute every day and it's all I've got right now. Thanks!

  2. #2
    Veteran Member Four Rings Okedokey's Avatar
    Join Date
    Oct 24 2015
    AZ Member #
    363505
    Location
    Perth, WA

    Scan for codes?
    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

    My respray thread

  3. #3
    Active Member One Ring
    Join Date
    Feb 02 2016
    AZ Member #
    368180
    Location
    Park City Utah

    Quote Originally Posted by Okedokey View Post
    Scan for codes?
    Yeah I'm going to do that later today I'll post an update.

  4. #4
    Veteran Member Four Rings
    Join Date
    Dec 23 2011
    AZ Member #
    85651
    Location
    USA

    My guess is either one of the two accelerator pedal position sensors are bad or damaged/frayed O2 sensor wires causing limp mode.

  5. #5
    Active Member One Ring
    Join Date
    Feb 02 2016
    AZ Member #
    368180
    Location
    Park City Utah

    I got a scan done, codes were all for Throttle Body Position or something like that, anyways I think I may have solved it by doing a Throttle Body Alignment using the APR chip that's in my car, I'll see in a couple days if it comes back.

  6. #6
    Established Member Two Rings shahk62's Avatar
    Join Date
    Jul 14 2015
    AZ Member #
    342413
    Location
    Sydney

    Potentially do a throttle body clean as well? If it was gunked up that could have caused it to stick


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    2005.5 B7 A4 2.0T Quattro - 034 RSB + End links, GFB DV+, 034 Snub, 034 Billet Rear Diff Carrier Mounts, BSR CAI

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