my 98 with a 4.2 threw the code for the bank 2 rear o2. bought a new one, and the o2 sensor socket, but cant get it to move. Tired all the tricks (pb blaster, impact, letting the engine run, propaine torch, 6 inch piece of pipe on the wrench) Any other tricks on getting these out before i cut the cat out and put it in a vice and get it out that way?

 

You might have to have it cut out and a new bung welded in. I can't think of anything else to do.

 

yea i was thinking of doing that. Just cutting the old weld out and tigging in a nut.

 

just cut the wires off. leave the sensor in as a plug. and buy an oxgen sensor simulator.
http://store.summitracing.com/partde...5&autoview=sku