They make special sockets and wrenches to get the old O2 sensors out, but (if possible), I unhook the wires from the harness, cut the wires off of the old O2 sensor and put a close-ended wrench over it. I then use a torch to get the old O2 very hot. Usually, the old one then comes out even if you have to use a lot of persuasion. The last one I did on a '97 Ford F250 fought me the whole way, squeaking and complaining, but the female threads remained in good shape while the threads on the old O2 sensor looked terrible. Your good replacement O2 sensors already have the thread coating on them and if you use a name-brand replacement, hopefully you'll never have to worry about that one again.
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Today's Featured Article - A Question for Dads This recent topic from the Tractor Talk discussion board is being highlighted because it is an awesome display of the caliber of individuals that have made this site their own. The young person asking questions received positive feedback and advice from total strangers who "told it like it is" with the care many reserve for their own kids. The advice is timeless... so although it isn't necessarily antique tractor related, it will be prominently displayed in our archives to honor those who have the courage to ask and those who have the courage to respond in an honest, positive manner.
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