O2 Censor in my Corolla

[JTUSF49]

Anybody know wheres its located i need to change it out...Thanks

[Orion ZyGarian]

Uhh...shouldnt it be before the first cat..?

[n2ocamry]

wow

thats a hard one

hold on ill tell you what i now about o2 sensors

they are attached to emmision devices only

so start at the rear muffler and follow the metal tube thingy along until you see the catalytic converter

its the part that is bigger than the pipe
there should be something sticking out with electrical lines BINGO

now continue up the tube until you get under the hood

look at the exhaust manifold

there once again is something sticking out with electrical lines
BINGO




i just have one question


how do you know you need to change them if you dont know what and where it is