correct, but I don't think it'll harm anything other than performance. When the o2 doesn't read anything, it'll cause you to run rich-not lean. In fact, if you're in a pinch and have a bad o2 sensor, you can unplug the electrical connector and it'll run better than If you left it plugged in.marty1mc wrote:Actually, your O2 sensor is mounted to the downpipe. It won't be able to monitor the fuel ratio on that side. Personally, I wouldn't drive it like that.