toybota

I have a 94' 4runner and would like to change what looks like the factory o2 sensor. Well being I live in Ohio unfortunately it is rust city up here. Well I got a clean runner but the exhaust looks like crap. My o2 sensor is on there and impossible to get off with 6-point deepwells. So I bought some Irwin Bolt-Grips that cut into the bolt to remove them. That didn't work either. Also this has been soaked in PB-blaster. Im thinking now to cut the bolt off and clean the threds vis die. I was wondering if anyone knows of any other way? Thanks in advanced for the help

jason191918

Are they bolts or studs? On mine they are studs. My studs twisted out, so I welded them in place, and used a torch to get the nuts off. If you are replacing the O2 anyway, unplug it and torch the nuts/bolts til it is red hot. Then unscrew them like they were put on last night.

norcalsvx

http://free-auto-repair-advice.blogs...en-sensor.html

jason191918

Does his 4runner have that style or is it the 2 stud style, like mine?