well about 6 months ago i noticed my afrs were off and lazy and i decided to run open loop and replace the o2 whenever i had a chance. on open loop idle and cruise was good and tuned it to 15s on idle and cruise which worked out good. when i replaced the o2 sensor and turned it back on i found that it was still playing up. idles 14.0-14.7 and cruises about 13.8-14.0 even with trims within 5%??? ive recalibrated the wb. logs show o2 volts are normal, no cels.....has anyone encountered this before?