Rep Power: 812

wtf i tried and failed lol. it looks like the sensor is recessed inside the cat and cannot be taken out. regular tools would not work, neither does the special sensor wrench with offset socket and opening for wire to fit through. Im stuck? lol

 
Rep Power: 262

If you are changing the sensor, just cut the wires off of it and use a deep socket in it.

 
Rep Power: 0

yea since your replaceing it the good ol hammer always worked for me on stubborn o2 sensors

 
Rep Power: 257

i believe the size is 22mm. what i did was I took a closed end 22mm wrench and dremeled a slot in it so you can get it over the wires. at this point i was able to get it on the sensor and take it out. I have a lot of spare wrenches laying around so i didnt care about cutting one. I dont recommend doing it to a good wrench though

 
Rep Power: 353

are u talking about teh upper or lower one???

 
Rep Power: 281

It must have rust/dirt settled in the threads. Use some bolt loosen/remover spray. Then use a breaker bar with the o2 sensor socket. It should come loose. The socket is big, and has a large slot on the side big enough for several wire sizes to fit through. I had to take off the heat shield first.

 
Rep Power: 812

but that special tool doesnt fit, its offset and hits the outer case of the cat where the wrench goes into it. the deep socket idea i see working, but yeah i would have to cut a slot in it for the wiring to put the new one on.

 
Rep Power: 281

oh okay. Well the socket has to be deep. Here is a pic of the one I picked up from oreilly:





$11 next to the sockets and tools.

 
Rep Power: 812

thanks thats what i need! 22mm??

 
Rep Power: 257

22 or 7/8 will work

 
Rep Power: 281

Mine is universal.

 
Rep Power: 389

Now that is a cool tool

 
Rep Power: 0

I couldn't get mine out either gear and that was with the cat off the car. I ended up cutting it out because I didn't have the nifty socket. Well worth the money.

 
Rep Power: 812

thanks guys i got the 7/8 one deep socket with cutout. will try it tonight hopefully its not stuck too badly.

 
Rep Power: 424

unbolt the heat shield surrounding the cat first. then try it. That shiny silver case comes off.

 
Rep Power: 812

done! it was a bit scary with an inch of overhead clearance lol and i almost got stuck under there, but it worked out and the socket was able to take it out with a cheater pipe. put the new one back and everythings fine. also did diy oil change while the car was up! more work than i thought but at least its only every 6 months.

 
Rep Power: 389

Gear, you dont replace your oil (yourself) according to the mileage you drive?

 
Rep Power: 812

well 6 mo/6k miles usually is the longest i wait because of the filter. oil is still fine upto 10k with lc20. if i can, i prefer every 5 mo but i dont think extra month will matter much. and i usually drive 1k miles per month

 
Rep Power: 353

thats how much i drive in a week and a half....hahahha