alrite i remember in my last forum about this topic someone had menstiond that there was 3 of us with this mystrey check engin lite that threw a o2 code.... well i fixed it for my self and i thought i would post what i did so maybe i can help u guys.

all i did was adjust the idel speed when my engine was at optemum running heat and set it to 800 or (750+50)

 

Interesting, so an o2 code doesn't necessarily mean you have to replace the o2 sensor? I have a 91 Civic Hatch 1.5 that threw a code 1 yesterday and hasn't thrown it since, I drove it 100 miles after shutting it off after the CEL light appeared. I wonder if the o2 sensor can be cleaned.

 

Some will say yes to the cleaning some (like me) say no.

 

they are so cheap for our cars, it's kinda silly to not just replace em

 

I agree, I do have two extras, one that is in my spare engine which is rather new I might just take out and replace it with if I get that CEL for that again.

 

well u can buy em but me i clean em.... where i live their not cheap.. the cheapest one i found was 100$ and even the universal is 70$. if want to clean it just dip the tip nto some gas and clean it off nice and dry. always works for me.