It is not that hard,
I used a 7/8" open end wrench, just removed the coil pack, then the harness under it, well just the bolts of this harness, and then reached the sensor using the normal wrench between in the space between the harness and where it was located, just used a li'l wd-40 and let it rest for 15 min. then it was easier to remove,
hope this helps,
RMR
