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O2 sensor... Stumped...
Ok, I had the o2 sensor housing switched, and with that, went in a different (used) o2 sensor. After it was all done, I saw my fuel trims where way up and my 02 voltage was way down (like .04-.06V). So I thought it was a bad o2 sensor. So, I put the other sensor back in, that I had thought was working just fine (at least last time I looked, and it was running fine). It did nothing for some reason. So I started tampering with the wiring harness thinking something must have gone wrong with that. I applied some current to the white wire that runs to the ECU to pick up the voltage, and the logger immediately showed this. I tested the red wire (which I think is the 02 heater wire???) and it gave me current, and if I directly connected the two, it would read fine. Could something be wrong with the grounds all of a sudden? Could my original O2 sensor also be bad? I mean, what are the chances? I was also informed that the newer o2 sensor was working before (when I bought it with the housing). I don't know what to do now? Buy a new o2 sensor? That just seems like a long shot. Please help me out if you can. I tried to research as much as I could before making this post.
Best,
Greg
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