O2 sensor on a 94 Runner

[Clone of the Mean]

Got a 21 code.... Is there just the one O2 sensor on this exhaust system? And where is it located? Thanks in advance.....

 

[fourwd1]

One in front of the cat conv.
Cali emissions trucks have a second one after the cat conv.

 

[Clone of the Mean]

It was cold and rainy today, I didn't feel like rolling around on wet asphalt. Thanks for the help.

 

[ToyoTech]

One in front of the cat conv.
Cali emissions trucks have a second one after the cat conv.

on my 88 i only have one in front of cat. and it is a Cali truck. maybe mine was before they did two

 

[Clone of the Mean]

Is it a fix it now kind of thing or can it be forgotten for awhile? Not my Runner, kid has it at school 300 miles away. He's gotta fix it, not me.

 

[ToyoTech]

i dont think its a fix it now thing. its mainly an emissions thing. i sure your MPG will go down a little if that but if you leave it going to long the cat my die

 

[ozzyleven]

I kind of look at it as something you should just fix because it is ridiculously easy to do. Like two bolts and clipping a wiring harness in. I got a Denso one from rockauto for $55.

 

[Clone of the Mean]

I kind of look at it as something you should just fix because it is ridiculously easy to do. Like two bolts and clipping a wiring harness in. I got a Denso one from rockauto for $55.

No Sir, not me. I'm done with my handy work on this thing. It's 300 miles away in the cold country of Arizona. My 21 year old mechanically challenged college student is going to tackle it this time. But if it isn't a "do it now kind of job, it won't get done til I hound him.....

So Matt, since you're reading this from your computer, go to RockAuto.com, buy the sensor and install it.

Thanks again everyone, great site!!!!

 

[ToyoTech]

if not, have a shop do it. should cost too much or find a member near him and maybe work out something