Oxygen sensor/s how many? How to replace?

[19CelicaSupra84]

How many oxygen sensors does my Supra have 1984.
Is it just the one by the exhaust manifold?

I see a thick needle like thing sticking out, with a wire BUT....... that wire isn't connected to anything -____-
would that explain my 12 - 13mpg?

Do you guys recommend any specific o2 sensor brands? Car is stock, with no mods and no intentions of anything other than keeping it running strong, and maybe a CAI & exhaust.

How to replace?

Any stickies with pics on this or something? Or is it a basic screw in, screw out?


Thanks a lot







Check it out, been driving a year like this

[LeVampireGenrye]

Pb blaster is my only advice

[Donn29]

Any single wire o2 will work. Ya, that wire is broken. I think you'll find the other end closer to the passenger headlight direction. Make sure you have the plug end for the sensor. Sometimes when you buy it, it won't have the plug end on it.

[scottevil]

Just the one sensor. Go with a bosch or NTK. Get the engine hot by running it for 10 mins. Then slip a socket over the old sensor and turn that bitch out.

[19CelicaSupra84]

Thanks guys.. I'm looking for that other end of the o2 so I can change it tomorrow.. but I have no clue where it's at.
What is it next to? Or if anyone has a pic, I'll love you forever lol (:

[REN69]

has anyone ever redone a wire?? mine is a little on the cracked side so I was thinking of rewiring it.

[scottevil]

It's just a single wire sensor as said before. Just cut away the old wire from the sensor and splice in a new wire. Or just get a new sensor they are cheap enough.Cover it with a heat resistance tape/sheath.

[Donn29]

The old one had the connector fall off his old sensor. But the plug comes from the harness that is on the passenger side of the engine bay. Look for it near the frame rail, look for wires hanging. Probably closer to the headlight. Also it is a two bolt flange, the studs won't likely strip or snap, but having it hot will help I'm sure.

[1982 Dragon]

Just replace. My NTK Japan one from napa was like 30 bucks lol last one in stock

[sowsley]

I thought on the Supra it is held in by two bolts, not a screw in type. Am I missing something? Mine is an '82 if that matters. I have a new one that needs to go in soon.