Ok my explorer has been running to lean for the longest time. I have had it tested for codes and it keeps saying bank 1 sensor 2. Well I replaced that one and replaced bank 2 sensor 1 also cauae I was told it was going bad. My engine still runs to lean. While doing an oil change I noticed bank 1 sensor 1 o2 sensor was NOT plugged in. I figured this is where the problem is. Now I can't find the wire to plug the sensor back in. I've looking under the motor where the sensor is and up top under the master cylinder and brake booster and I still can't find the other end to plug the sensor back in. If anyone knows where the wire is please let me know. By the way, my engine is the OHV 4.0 if this helps
have the same problem?
Wednesday, January 8th, 2014 AT 12:02 PM