Oxygen/o2 Sensor purpose - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

drugsbunny · 06-24-2013, 11:57 PM

What is the purpose of the oxygen sensor some people have it hooked up and some don't. What is the advantage?

DJ-of-E · 06-25-2013, 12:09 AM

Quote:

Originally Posted by drugsbunny

What is the purpose of the oxygen sensor some people have it hooked up and some don't. What is the advantage?

Let me put this link here you know how it works.

Let me google that for you

If you don't understand it, go back to school and learn stuff like...science?

*fliprayzin240sx* · 06-25-2013, 08:12 AM

ECU uses it to fine tune the car to stoich. Without it, the computer will run the engine rich and there goes your gas mileage.

davidg01234 · 06-26-2013, 11:58 AM

Its used to keep afrs as close to 14.7 on gasoline engines at idle and cruising and light loads. When boosting, the ecu then goes into open loop and ignores the o2 sensor so it can richen up the afrs.

06-24-2013, 11:57 PM	#1
drugsbunny Leaky Injector Join Date: May 2010 Location: Chicago Posts: 73 Trader Rating: (0) Feedback Score: 0 reviews	Oxygen/o2 Sensor purpose What is the purpose of the oxygen sensor some people have it hooked up and some don't. What is the advantage?

06-25-2013, 08:12 AM	#3
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	ECU uses it to fine tune the car to stoich. Without it, the computer will run the engine rich and there goes your gas mileage. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

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06-26-2013, 11:58 AM	#4
davidg01234 Zilvia Member Join Date: Feb 2011 Location: Fort Worth,TX Posts: 179 Trader Rating: (3) Feedback Score: 3 reviews	Its used to keep afrs as close to 14.7 on gasoline engines at idle and cruising and light loads. When boosting, the ecu then goes into open loop and ignores the o2 sensor so it can richen up the afrs.