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  1. 10-25-2008 03:03 PM #1
    Unispeed
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    What should my O2 sensor voltages be at IDLE? Want 14.7AFR.

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    The title says it all...
    2015 Audi A4 2.0TFSI (GEN 3 engine) with DL501 transmission (GEN 2 tran.)
    (B9 A4 engine mated to an S4 transmission in a B8.5 chassis. )

    2000 S4 6spd stg 2+ (gone but not forgotten)
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  2. 10-25-2008 10:50 PM #2
    MissingPixels
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    Re: What should my O2 sensor voltages be at IDLE? Want 14.7AFR.

    Your voltage from your O2 sensors should normally rise and fall somewhere between 0-1v when your car is warmed up. Why would you want to tune for stoich at idle? I would worry about your AFRs under WOT, not idle.
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  3. 10-25-2008 11:33 PM #3
    Unispeed
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    Re: What should my O2 sensor voltages be at IDLE? Want 14.7AFR.

    at WOT its perfect... thank for the info
    2015 Audi A4 2.0TFSI (GEN 3 engine) with DL501 transmission (GEN 2 tran.)
    (B9 A4 engine mated to an S4 transmission in a B8.5 chassis. )

    2000 S4 6spd stg 2+ (gone but not forgotten)
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  4. 10-26-2008 03:17 AM #4
    MacDaddy
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    Re: What should my O2 sensor voltages be at IDLE? Want 14.7AFR.

    .9V is what it should read at idle, generally at WOT a cars o2 sensors go into open loop and the injectors go to maximum duty.
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