So I've been getting O2 DTCs for the past few days, I delete them and they come back, so I decided to replace it with a Duralast sensor earlier today, but when we turned it back on the car would run like crap so we put back the old sensor and to our surprise, it still ran like crap.
The O2 sensor wires were extended a few months back to fit the headers so we proceeded to check the wires. After removing the tape we found no problems with the wires, so we taped them back together and connected the old O2 sensor back, but this time I disconnected the PCM fuse a few minutes, now it's running normally.
Did I miss something here? I'm not really sure what to do next, I was thinking on testing the signal on with the scanner to see if I'm getting the right voltage.
