Hi All,

Before I get into detail I just want to let everyone know I tried to search for an answer on the forum for weeks now but no luck. Soo... my Cat and O2S smog monitors aren't setting. I've tried the drive cycles as listed on the forums plenty of times but no luck. I put on a good 1500 miles too with varying city & freeway roads but no luck.

My car also have a misfire issue I've been trying to figure out. Random misfire on all 4 cylinders. I changed spark plugs, coils, and valve adjustment but no luck. Car runs really well aside from the misfires. I am getting a CEL for the misfires but nothing else..... I'm thinking maybe the O2 sensors are dying but it isn't throwing a cel...and causing a misfire?

Let me know what might be the problem or the next step.. thanks!!!!!

 

There are many threads on this, use Google to search putting s2ki in your search subject.

https://www.s2ki.com/s2000/topic/742...ass-emissions/

https://www.s2ki.com/s2000/topic/744...t-ready-codes/

https://www.s2ki.com/s2000/topic/101...ready-no-pass/