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Driving cycle


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Just to recap my problem. I have a 97 STS and I can not pass the emissions test in the great state of Pa. because I have 3 readiness sensors that are not ready. The sensors are the catalyst and two oxygen sensors are not ready. When I asked about the drive cycle in my earlier post I was refering to GM or Cadillac drive cycle to reset the readiness sensors. But Guru I think you may have something about the O2 sensors having low activity, tell me more. <_<

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