downstream o2 sensor affecting fuel trim - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

nickmoS14 · 06-05-2012, 10:52 PM

hi, im a bit new to forums so bear with me. but i have a 95 s14 and the idiot who owned it before never put o2 sensors in with the exhaust(no cat) and im gettin the upstream one, but the harness for the down stream one is non existent.
A. is the down stream o2 only for catalyst health?
B. if so will i be able to run in closed loop without the downstrem o2 or will it turn on the mil and keep me in open loop.

06-05-2012, 10:52 PM	#1
nickmoS14 Join Date: Jan 2012 Location: chicago Posts: 19 Trader Rating: (0) Feedback Score: 0 reviews	downstream o2 sensor affecting fuel trim hi, im a bit new to forums so bear with me. but i have a 95 s14 and the idiot who owned it before never put o2 sensors in with the exhaust(no cat) and im gettin the upstream one, but the harness for the down stream one is non existent. A. is the down stream o2 only for catalyst health? B. if so will i be able to run in closed loop without the downstrem o2 or will it turn on the mil and keep me in open loop.