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  1. 12-28-2008 09:18 AM #1
    ComfortRacing
    ComfortRacing is offline
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    Join Date
    Oct 03 2007
    AZ Member #
    21542
    My Garage
    Audi A4 quattro
    Location
    Richmond Va

    *help* A4 is bucking but no cel

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    my a4 started bucking this week at 3/4 or so throttle. it isnt my clutch because the rpms do fluctuate and the boost is constant. the weird thing is it isnt throwing a cel. the only extra thing i have installed for the cel's is the APR test pipe program. so not sure if it is something to do with that. this is an itermitent problem, it happened once before and went away. is it possible the gas is the problem?

    any info is greatly appreciated.

    chad
    2002 A4 Quattro 5-speed, KO4, SPP Ported/Polished Turbo Manifold, ATP test pipe, APR ko4 tuning, APR injectors, APR R1 DV, Front mount intercooler, H&R sport springs/Bilstein sport shocks, Neuspeed snubber mount K&N, Blackedout grille, Badgeless rear.

    To Do's:
    -APR Sport exhaust
    -Porsche seats, brakes and wheels
    -Recarro Baby seat =)
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  2. 12-28-2008 09:19 AM #2
    F16HTON
    F16HTON is offline
    Veteran Member Four Rings F16HTON's Avatar
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    Jul 04 2004
    AZ Member #
    2688
    My Garage
    992 Carrera
    Location
    Makai - Kaka'ako

    Re: *help* A4 is bucking but no cel

    Did you scan the car and read the MIL?
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  3. 12-28-2008 09:20 AM #3
    ComfortRacing
    ComfortRacing is offline
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    Join Date
    Oct 03 2007
    AZ Member #
    21542
    My Garage
    Audi A4 quattro
    Location
    Richmond Va

    Re: *help* A4 is bucking but no cel

    no scanner, i could take it somewhere tomorrow though.

    any thoughts?
    2002 A4 Quattro 5-speed, KO4, SPP Ported/Polished Turbo Manifold, ATP test pipe, APR ko4 tuning, APR injectors, APR R1 DV, Front mount intercooler, H&R sport springs/Bilstein sport shocks, Neuspeed snubber mount K&N, Blackedout grille, Badgeless rear.

    To Do's:
    -APR Sport exhaust
    -Porsche seats, brakes and wheels
    -Recarro Baby seat =)
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  4. 12-28-2008 09:56 AM #4
    turboquattro068
    turboquattro068 is offline
    Active Member Three Rings turboquattro068's Avatar
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    Mar 20 2005
    AZ Member #
    5773
    My Garage
    99.5 Audi A4, 99 Honda CBRf4
    Location
    Upstate, new york

    Re: *help* A4 is bucking but no cel

    boost leak, to much boost.......maybe your maf? is it bucking really hard?
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  5. 12-28-2008 10:03 AM #5
    ComfortRacing
    ComfortRacing is offline
    Registered Member Two Rings ComfortRacing's Avatar
    Join Date
    Oct 03 2007
    AZ Member #
    21542
    My Garage
    Audi A4 quattro
    Location
    Richmond Va

    Re: *help* A4 is bucking but no cel

    yeah like it feels when a car misses.
    2002 A4 Quattro 5-speed, KO4, SPP Ported/Polished Turbo Manifold, ATP test pipe, APR ko4 tuning, APR injectors, APR R1 DV, Front mount intercooler, H&R sport springs/Bilstein sport shocks, Neuspeed snubber mount K&N, Blackedout grille, Badgeless rear.

    To Do's:
    -APR Sport exhaust
    -Porsche seats, brakes and wheels
    -Recarro Baby seat =)
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  6. 12-29-2008 12:12 AM #6
    GermanAudi
    GermanAudi is offline
    Senior Member Two Rings GermanAudi's Avatar
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    Jun 01 2008
    AZ Member #
    29426
    My Garage
    2003 Audi A4 1.8T Multitronic
    Location
    San Diego, CA

    Re: *help* A4 is bucking but no cel

    I had the same problem a few months ago. Turned out to be a vacuum leak.
    2003 1.8T Multitronic CVT, Canvas Beige Metallic
    GIAC Stage 1 || 710N TT Diverter Valve || 6000K Xenon HIDs || VMR Vent Boost Gauge || Eibach Pro/Bilstein Sport Suspension
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  7. 12-29-2008 12:18 AM #7
    onceover
    onceover is offline
    Veteran Member Four Rings onceover's Avatar
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    Jun 08 2008
    AZ Member #
    29690
    My Garage
    B8 A4, 964 Carrera, 955 Cayenne S, MK1 Cabrio, T2b Westfalia
    Location
    Calgary AB Canada

    Re: *help* A4 is bucking but no cel

    surging?
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