lorainfurniture,
I didn't try the heat/ice - I shot some PB blast into the area, hoping one would budge...but nothing.
Heard horror stories of broken spark plugs, and didn't want to risk further.
I had the new plugs, and even that special torque wrench ready to go.
Should I look up cleaning the O2 sensor or just replace it?
Fortunately, I don't live in a state that the car would have to pass an emissions check.