Hi, I hope someone can help me. I removed the exhaust system, Y-pipe and manifold before the winter. Now I've swapped it all for long tube headers and a 3 "exhaust system, my problem now is that I can not find the cables for the o2 sensors again, I see 2 pieces, but it should be 4, is not it?

 

what year and engine? should be one on each side before cat and one after cat.

 

Z28 year 2001, LS1.

I find only one connection on both sides. Are all 4 the same sensors with their same connections?

 

Yes they are

 

i think the after cat 02 wires come from above the trans. on my 3.8 it was hard to find the after cat one.

 

I have a 2000 with LS1. short tube headers. there are 2 O2 on drivers side and only 1 on right side. I did the mod with a spacer to move the O2 away from the pipes, no codes now. good luck