cel ewww

[tokico]

My em2 is throwing the efficiency of cat code, anyone have this before? First i ordered a cat on ebay which didnt fit perfectly and still threw code. Next i ordered a rear o2 sensor, now i just threw the code again. I think im going to put the stock cat back on with new o2 sensor and see what happens. Any input?

[894ws]

the ghetto way to fix it wich i would do on my vehicle and have done it before would be to get a spark plug non fouler and put it in location of your o2 and then screw the sensor into the non fouler and this should get rid of the code

[MrRline2010]

Whats the code is it p0420? I know when i had that one it ended up being a crack in my exhaust manifold near the first sensor. I know that it's common for the exhaust manifold to crack as well on em2's for some reason. Anyway maybe this will help you out. Try taking off your heat shield and give it a look maybe that's been it all along.

[tokico]

Okay thanks. I already have the heat shield off so ill go give it a look in a little.