Do I need a special tool to switch out my O2 sensor? The nut seems to be sitting in some kind of built in flange that is preventing me from getting a wrench down in there far enough to loosen the old one. Ideas?
Here's a "sticky" (URL below) for all-in-all for O2 sensors. I was able to drop my exhaust, get some vice-grips in there and use a rubber
mallet to ease it on out. But then again I was replacing it with a new sensor I didn't care about the condition of the old one
Infobit: inexpensive BOSCH heated O2 sensor