ok this has been goin on for quite a while. my check engine light is on on my 2000 auto tiburon and im not sure how to fix it. it came on after i put an aftermarket exhaust on (and i dont have my cat converter....shhh...) so i put an o2 simulator on so that the o2 sensor would read rite but it didnt help so im clueless. wutz next...help

 

Ummmm.... maybe making the car legal again? Sorry, I really am no help here...

 

your o2 sensors may be bad, even though you put the simulator on, the o2 sensor usually get damaged when they are messed with, even a little. it has happened to me in every vehical i've owned. if that dosn't work then get yourself a high flow cat so you can keep the high flow.

 

A lot of these newer vehicles especiall OBDII compliant vehicles, the computer will pick up anything that is not made by manufacturer. Especially if there catalytic converter is not hooked up. You might want to get a high flow cat, like returbulance said, so that it at least has a cat on it. You might also want to take it to Autozone, they will check your computer and see what made the light go on... Might not even have anything to do with the exhaust,. never know.. Those computers are becoming a pain in the butt... lol so sensitive anymore...

 

Oh yeah, forgot something else... You can also get the code reader yourself. and delete the code, and keep deleteing it whenever it comes on... lol that is, if you don't want to worry about seeing the light. LOL Get them at autozone about 50 bucks, for the cheap one.