Second o2 sensor

sittinlow88

New Member
Aug 3, 2009
4
0
0
Florida
First off I apologize if this question has been answered on this forum already I searched both supramania and supraforums for the answer and could not find it.

I have an '87 with a 2jzge swap and the 2j wiring harness, but there is only one 1 o2 sensor plug on the harness, the harness is uncut and seems to be fully intact and I got the car already swapped and the previous owner told me that it was a full 2j harness but then were is the secondary o2 sensor plug? and do I need it? only the front o2 is plugged in and I don't get any codes so I assume it is unnecessary and I can use the secondary one down the road for a gauge....Is this right?
Thank you!