Is there a special tool or something that I need to remove the 02 sensor on the cat. converter? A special wrench or something?

 

NOPE... i believe it is 23 mm

 

when i ran over a fireheidrent wit my prelude the mechanic had to use a special tool that had an opening on the top to fit over the sensor. iono bout ur case.

 

just use an open ended wrench. Its like 23mm or something, its prety big.

 

22mm open-end wrench, although if you can get the closed-end over it, that's even better to use. 6pt is better than 12pt in this case, but not necessary.

I don't recommend using an oxygen sensor socket b/c the socket is difficult to keep seated properly while trying to bust it loose.


[Modified by IN VTEC, 11:28 PM 4/7/2003]

 

So is it a 22mm or 23mm?

 

I don't even own a 23mm box wrench or anything beyond 19mm (except that 22mm). I remember that 22mm is the size I used for the oxygen sensor and tie rod jam nuts.


[Modified by IN VTEC, 2:03 AM 4/8/2003]

 

all of the oxygen sensors i have pulled out were 22mm and the backpressure tester i use has a 22mm fitting on it. i don't know exactly for your application, but i say to go with the 22mm.

 

its a 22m

 

theres a special socket for the O2 sensor, not neccessary but convenient. Like the other guy said, you probably want to bust is loose with something else first tho.

 

O2 sensor socket and impact gun. I tried that wrench crap and the thing wouldnt budge.

 

Soak the SOB with PB/WD40 and go to town with a wrench. Slide a pipe over it if you need the leverage...leverage is key.

 

I just bang the wrench with a sledgehammer to break it loose.

 

I just used a crescent wrench...

 

So I guess the dam thing is pretty tightly held down. I don't have access to a impact guy, that's for sure. Would a pipe work, if I put the wrench int he pipe and then go to loosen it up?

 

thats what i did. And its a 22mm

 

That'll work, do you not have access to tools?

 

Got the basic wrench, sockets, pliers...

 

I just use a box-end wrench, after soaking in PBblaster. I've got the socket, but its harder to use because there's no room. There's barely enough room to feed the wire thru the opening of the wrench. Sometimes they're easier to get out if they're good & hot from driving.