How do you get the o2 sensor (bank 1) out. It's the one before the CAT, passenger side just down from engine. There doesn't appear to be any room to get tools in there. Can someone who's done this please shed some light on this. Tools used & how they got it in there.

1997 F150 5.4L

Auto Zone pulled P0133 (O2 sensor) & P1131 (Fuel Air Metering) and I'm going to start on the O2 sensor and see if this helps.

 

I accessed it from underneath and I think I used a 7/8 open end wrench...came out real easy.

 

I usually go in through the inner fender with the tire off.