Here's how I did mine:

1) Disconnected the harness connection up by the intake manifold. Pulled the pigtail off, and then got underneath.

2) Dropped the front driveshaft, just so I'd have a little more wiggle room.

3) Got underneath. The screw heads are 11MM. Two screws, just like in that diagram.

4) Pulled the old one out.

5) On the new one, I uncoiled it the best I could, connected it in the engine compartment, snapped the thing into place on the bracket, then tied a length of wire to the sensor end. Shoved the wire down by the bellhousing, so I could pull the sensor down to where it had to go, gently uncoiling it. Bolted it in place and fired it up.

My Jeep runs like new, now.

 

has 2 11 mm bolts. use lots of extinsions and a swivle. gl they are in a tight spot. i just did mine last week and then still had the same problem. the next thing i replaced was the electronic control module. it was 115. new at autozone with a lifetime waranty. the next thing that i would have done would have been the coil mounted on top of that, but that got it ....good to go again.....