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  1. #1
    Veteran Member Three Rings NYC_Legacy's Avatar
    Join Date
    Oct 14 2009
    AZ Member #
    49251
    Location
    AZ/NY

    Vag-Com/VCDS Help

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    I am trying to diagnose my Low Pressure Fuel pump in my RS. I have seen on VAGCOM Wiki that you can measure the duty cycle and if it is above 70% the pump should be replaced. However, I can not find that information in VCDS when I look for it in my car. The measuring block 106 only indicates that my electric fuel pump is ON no further information. Is it possible to get this information on the RS4? Thanks in advance!
    "Brake last, finish first."

  2. #2
    Veteran Member Three Rings gesTTalt's Avatar
    Join Date
    Oct 10 2004
    AZ Member #
    3757
    Location
    SoCal

    I use blocks 1, 103, and 106. 103 shows the lp fuel pressure, and 106 shows fuel rail and duty cycle. Not sure why your 106 doesn't show values. Are you tuned?
    07 Daytona Grey RS4

  3. #3
    Veteran Member Three Rings NYC_Legacy's Avatar
    Join Date
    Oct 14 2009
    AZ Member #
    49251
    Location
    AZ/NY

    I am not tuned. I should be entering these values in under the engine tab correct? What pressures should I be seeing on my LPFP at a warm idle, what pressures would indicate a problem?
    "Brake last, finish first."

  4. #4
    Veteran Member Three Rings
    Join Date
    Jun 25 2009
    AZ Member #
    44222
    My Garage
    07 RS4, 91 BMW 318is
    Location
    SC

    NYC: I have the same thing as you when I view block 106. What year is your car?

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