You've been Great help immattj and arrow! So I put the new pcm in and I started it up with a scanner on it. I did a live reading and I have no clue what most of it means so I don't know what I'm supposed to look for. I have number values but don't know of they are normal or not. And the o2 thing kept jumping from the word high to center high to center. I went ahead and downloaded the results though.