i just recently extended the wires on my primary o2 sensor and secondary, i used the extension givien with the header on the second one, and made my own for the primary. first time i forgot to wrap the wires and i shorted out fuse 15. rewired and check engine light went away. came back on next day and pulled code 63. took it to a shop for further diagonse and they say its a bad secondary o2 sensor. i'm thinking the problem is in the wiring somewhere, but where? anyone have any expierience with this sort of problem? btw i dont have shielded wire, and did solder all connections.

 

i popped up a bad secondary o2 sensor a while back, but its wasnt my sensor, my cat was just bad.. not and electrical answer but maybe this will help.

 

well i have a brand new high flow cat in right now. i hope it lasts more than 2 weeks lol

 

 

could take somewhere to have a five gas macj\hine hooked up it will tell you if the cats bad basiccly. or just replace the secondary o2 and if doesnt go away then you know the cats is bad

 

alright, thanks for the info, i'm not gonna worry about it till e-test, not for another year and a half, so what can i do to get rid of the CEL? besides using an o2 sim?