Las week I replaced my old Oxygen Sensor, and reset the LAMBDA counter. By everything I've seen with other posts, I was prepared for a hard task. Quite the opposite. This has been quite possibly the easiest repair I've ever done. The Oxygen Sensor came out with a slight tug from a cresent wrench. A little anti seize compound on the threads, and the new one went in. Fishing the wire thru the chassis and into the ECU compartment was a breeze. If you pull the plug inwards, out of the hole, you can dis/reconnect the Sensor wire very quickly. The LAMBDA counter was fairly simple as well. I disconnected the upper & lower speedo cables, the electrical wires for both the counter, and the inertia switch (wrong place, I know). Remove the two bolts that hold the bracket, and simply pull. A pair of needle nose pliers, and the counter was reset. I was even able to lube up the lower speedo cable with some lithium grease after I accidently pulled it out. Even though I had to move my car with the cables disconnected to get more comfortable position, everything then reconnected almost as easily as it came apart. Just thought I would share my expierence with everyone here on the list. Admittedly, I was a bit intimidated by what I've read from other posts. I had a propane torch on hand just in case. Although I did let the car idle for about 2-3 minutes before I climbed underneath. But it was for the most part a simple task. And ever since, my gas milage has improved tremedously! -Robert vin 6585 "X"