Consult Port Readings - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

paffyman · 09-20-2013, 05:35 PM

Hello! I recently purchased and hooked up a consult to usb adapter to my 93 240sx (Ka-24-de) After I got it all up and running I took it for a spin. All of my gauges seemed to be working fine except my o2 sensor. It kept/keeps giving a sporadic reading of Min to Max (I'm not sure of the actual values since i'm not in my vehicle at the moment, i just know that the meter was maxing out at either direction very rapidly.) At first i thought my o2 sensor was bad, but then a friend told me that if it was bad then the meter would be stuck to either on or off. it idles at 8-900 rpm, i smell gas through the exhaust, i don't hear or feel any misfires, it still has great power. I'm not sure where to start. I had the engine overhauled recently and have a short air ram intake, 4-2-1 exhaust header, and beldin blue spark wires. What do i do?!

z2roll4life7 · 09-20-2013, 06:22 PM

That is normal, the o2 sensor sweeps like so the ECU can figure out where stoich is. This is to get the best mileage and emissions.

racepar1 · 09-20-2013, 07:53 PM

Yep, if your o2 reading was consistent THEN you've got a problem...

cotbu · 09-21-2013, 08:24 AM

It's the reason why we use wide bands for tuning, and not narrow bands!

paffyman · 09-21-2013, 10:54 AM

Ah Thank you! that helps ease my worried mind. The gas mileage is pretty decent (31 highway - 27 city) but i just hate smelling gas every once in a while. Thank you for your help.

09-20-2013, 05:35 PM	#1
paffyman Join Date: Apr 2010 Location: charlotte Age: 38 Posts: 2 Trader Rating: (0) Feedback Score: 0 reviews	Consult Port Readings Hello! I recently purchased and hooked up a consult to usb adapter to my 93 240sx (Ka-24-de) After I got it all up and running I took it for a spin. All of my gauges seemed to be working fine except my o2 sensor. It kept/keeps giving a sporadic reading of Min to Max (I'm not sure of the actual values since i'm not in my vehicle at the moment, i just know that the meter was maxing out at either direction very rapidly.) At first i thought my o2 sensor was bad, but then a friend told me that if it was bad then the meter would be stuck to either on or off. it idles at 8-900 rpm, i smell gas through the exhaust, i don't hear or feel any misfires, it still has great power. I'm not sure where to start. I had the engine overhauled recently and have a short air ram intake, 4-2-1 exhaust header, and beldin blue spark wires. What do i do?!

09-20-2013, 06:22 PM	#2
z2roll4life7 Zilvia Member Join Date: Mar 2009 Location: charlotte Age: 36 Posts: 213 Trader Rating: (3) Feedback Score: 3 reviews	That is normal, the o2 sensor sweeps like so the ECU can figure out where stoich is. This is to get the best mileage and emissions. __________________ It's just the internet

09-21-2013, 08:24 AM	#4
cotbu Post Whore! Join Date: Sep 2005 Location: SWFL Age: 49 Posts: 3,318 Trader Rating: (3) Feedback Score: 3 reviews	It's the reason why we use wide bands for tuning, and not narrow bands! __________________ LoverTechnologies "Half Broken Things!"

09-20-2013, 07:53 PM	#3
racepar1 Post Whore! Join Date: Jul 2007 Location: Simi Valley, CA Age: 41 Posts: 9,006 Trader Rating: (106) Rides Gallery: racepar1 Feedback Score: 106 reviews	Yep, if your o2 reading was consistent THEN you've got a problem...

09-21-2013, 10:54 AM	#5
paffyman Join Date: Apr 2010 Location: charlotte Age: 38 Posts: 2 Trader Rating: (0) Feedback Score: 0 reviews	Ah Thank you! that helps ease my worried mind. The gas mileage is pretty decent (31 highway - 27 city) but i just hate smelling gas every once in a while. Thank you for your help.