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Dummy O2 sensors?


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  • Dummy O2 sensors?

    I heard that there are these dummy o2 sensors that you can plug into the O2 sensor wiring harnesses in place of the actual o2 sensor. It sends a signal back to the computer telling it that every thing is good to go. They are used for vehicals that have OBDII and no cats so that the check engine light doesnt come on and the engine runns right with the cats removed. Anybody ever used or heard of someone using these? If so where do you get them and what kind/how much are they?
    1999 OBS Chevy 5.7L Z71. ecsb, 6 inch bds suspension lift and 3 inch body. 37"x14.5x15 Toyo Open country MT's. Flowmaster super 40 cat back dual out the side and a K and N cold air intake

  • #2
    Re: Dummy O2 sensors?

    Yes they do exist. I have them on my truck. I have a set made by casper electronics and sells them. Oxygen sensor simulators.
    :fsg: 1997 GMC K1500 XC 9in 35's
    1990 GMC K1500 406, Predator Carb, 5Spd 32's


    • #3
      Re: Dummy O2 sensors?

      They sell for about $80 a pair, it's cheaper than having them programmed out of the computer


      • #4
        Re: Dummy O2 sensors?

        they are call O2 simulators for the rear HO2S. not for the
        front HO2S. they just relay false info to the computer to
        keep the rear HO2S signals from tripping the SES light.

        2001 Silverado 4.8L 4-spd Automatic 3.42
        ? horsepower
        ? torque
        will find out soon!

        1965 C10 5.3L (SSR) TH4L60e
        (It's Alive! 07/04 It Drives! 03/05 Daily Driver XX/08!)