ok i just replaced sensor #2 (the one in the cat) with a splice in one from NTK, and i'm still getting codes! has anyone used this kind before? after looking, i determined that the wires spliced together with the same color ones on the stock harness. is that correct? i've already replaced sensor #1 and i'm tired of replacing these things, thanx for any help...

 

same codes? Unless youre replacing with "no good" O2 sensors... If they are good, i'll start heading towards Cat. faulty.