ah you had the cell light,that’s why I’m a little on hope with this 02 sensor swap,as I have no engine light and no DTC when scanning it.

 

Should the downstream 02sensor be reading 0volts???
Even if the catalysts has been gutted out?
Is there even a 2nd 02 sensor on a evo 8?

 

ive never logged mine... i think it was cut off when i bought the car.

 

yes there is a secondary sensor post CAT. It checks to see if the cat is working ....IIRc the VIII/IX had it on the rear of the cat

 

Change the front O2 sensor and check to see if the post cat sensor is plugged in and working. Use an Odb2 scanner to check

 

just remembered my cat is gutted hence maybe why I’m not getting any reading,that’s what I’m thinking or doesn’t matter should be reading?
rear shows 0volts and front show 0.8v but I’m not seeing fluctuating from what I’m reading,then some post I see says it’s fine if it doesn’t fluctuate as it’s only at idle.
so getting real confusing

 

did you replace the front sensor?

 

They messed up my order,so had to put my old one back in.
so just trying to test my old one as oppose to just throwing parts at it.

 

good luck