O2 Sensor replacement was a breeze! Drove to Kalamazoo and got the best gas mileage ever!!! Was like 32 on the way out and 30 on the way home!!! After about 5 days though with the new 02, I threw a CEL, then it went away, checked the CEL, Registers P1151 (lean bank 2 sensor 1) & P0136 (bank 1 sensor 2). Looks like I may be replacing another. I did find one some months back that was loose right by the oil pan. I could turn it with my fingers, that got tightened down, and I checked all the O2 sensors when I changed the front one before MI. I'm going to keep an eye on it and see what she does, I've actually started tracking my gas mileage since going out to MI as well.
