i was wondering exactly how to remove the o2 sensor. the after cat o2 sensor. im wondering how to get at the plug in piece. it seems to be surrounded by a rubber piece and located in the car. do i just pull that out? someone please help as i have the car jacked up and ready to change it.

 

you either use a box wrench or a O2 sensor socket, loosen the o2 sensor from the exhaust and unhook the harness

 

It is a 22mm wrench, and if it is the rear o2 then you will need to unhook the plug inside the cabin behind the radio and then it will come out through the grommet in the floor.

 

Mine has a harness outside of the car, wierd.

 

heres a pic of the piece i need to get out
http://i138.photobucket.com/albums/q261/ju...54/000_1230.jpg

 

thanks not an 02 sensor...

I'm not sure where your at but it kinda looks like one of the air conditioning system lines or a brake line.

 

the wire you see is plugged into my exhaust after cat . the white piece with the prongs is part of the sensor that i pulled apart. you can see the bung. its an aftermarket cat.

ok. the rubber piece turned out to be a grommet, which i pulled out with a flat screwdriver. but the o2 plug-in piece is up in the hole and i cant pull it out. should the piece be coming out?

http://i138.photobucket.com/albums/q261/ju...54/000_1235.jpg

^^thats where im at now.

 

Did you pull the radio out and disconnect it from inside the car? Looks like no.

 

wow, thats weird. Tims right, on the newer tibs the connector is on the outside.

 

ok. i pretty much have everything figured out. thanks to tim and his "behind the radio" info. ive got the new o2 sensor plugged in now.
another question: if i dont screw my o2 sensor in the exhaust, will my car still run rich? can i just let it hang? atlantic canada winters + rusted like crazy+ no good tool = not coming off today.