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Thread: AFR Control On = car dies

  1. #1
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    AFR Control On = car dies

    What could be the cause for this?

    Anytime i press "On" for AFR Control the engine dies immediately.

    Stock 2002 Camaro Z28 SS.

  2. #2
    HP Tuners Owner Keith@HPTuners's Avatar
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    You could be commanding an AFR that the vehicle can't run with...
    We got this guy Not Sure, ...

  3. #3
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    I left it at the default 14.7 - this is at idle.

    Is there anywhere in the VCM Scanner that you can see if the engine is i closed loop?

  4. #4
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    Quote Originally Posted by kristov View Post
    I left it at the default 14.7 - this is at idle.

    Is there anywhere in the VCM Scanner that you can see if the engine is i closed loop?
    Should be obvious by looking at fuel trims or O2 voltages. If in closed loop STFT's will at least be moving around a little bit and O2 sensor voltage will be swinging back and forth because of the fuel trims.. i.e. O2 sensor cycling

    And what is your setup? What injectors?
    Post a log and tune if you want help

    VCM Suite V3+ GETTING STARTED THREADS / HOW TO's

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  5. #5
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    Quote Originally Posted by schpenxel View Post
    Should be obvious by looking at fuel trims or O2 voltages. If in closed loop STFT's will at least be moving around a little bit and O2 sensor voltage will be swinging back and forth because of the fuel trims.. i.e. O2 sensor cycling

    And what is your setup? What injectors?
    Totally stock. The reason I ask is because when I scanned with EFI-Live it said CL-fault for both banks when looking at the Fuel Status on the main Dashboard.

  6. #6
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    Quote Originally Posted by kristov View Post
    Totally stock. The reason I ask is because when I scanned with EFI-Live it said CL-fault for both banks when looking at the Fuel Status on the main Dashboard.
    Not familiar with EFI Live at all so I dunno

    Do you have HP Tuners?

    Pull the actual codes and post them

    Also worth posting tune and log if you want help
    Post a log and tune if you want help

    VCM Suite V3+ GETTING STARTED THREADS / HOW TO's

    Tuner by night
    CPX Tuning
    2005 Corvette, M6
    ECS 1500 Supercharger
    AlkyControl Meth, Monster LT1-S Twin, NT05R's
    ID1000's, 220/240, .598/.598, 118 from Cam Motion

    2007 Escalade, A6
    Stock