Denso 3-Wire O2 Sensor Question - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Tyler_240 · 01-02-2016, 06:44 AM

I've tried searching, I know what is what coming from the harness side, but what are the wires on the O2 Sensor? Mine are red, black, and white.

I found a few articles that stated the Black wire was the sensor wire. I'm sure this has been asked a thousand times.

S13 Redtop #62 ECU and the Skinny 02 Sensor (Denso)

Currently, I have it wired up as White to Ground, Red to 12v, and Black to Signal.

I'm trying to get my timing set correctly and I'm unsure if its acting up because of the 02 sensor.

It idles at 850~900 but I can see the ECU trimming/adding timing. TPS is set to .5v closed and slightly over 4v WOT.

It feels like its hunting a bit at idle, like the timing is slightly off, but when the ECU calms down, its right at 15* BTDC...if i leave the TPS plugged in, and rev to about 1200 RPMs, its right at 15* BTDC. Using the #1 plug wire method of checking the timing.

Any thoughts? Thanks in advance.

Tyler_240 · 01-02-2016, 03:17 PM

CAS Timing off...followed this guide and its still running like poo

http://www.frsport.com/How-To-Set-Cr...gine_t_25.html

01-02-2016, 03:17 PM	#2
Tyler_240 Zilvia Member Join Date: Feb 2005 Location: Gainesville, FL Posts: 239 Trader Rating: (9) Feedback Score: 9 reviews	CAS Timing off...followed this guide and its still running like poo http://www.frsport.com/How-To-Set-Cr...gine_t_25.html Last edited by Tyler_240; 01-14-2016 at 08:21 PM..

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01-02-2016, 06:44 AM	#1
Tyler_240 Zilvia Member Join Date: Feb 2005 Location: Gainesville, FL Posts: 239 Trader Rating: (9) Feedback Score: 9 reviews	Denso 3-Wire O2 Sensor Question I've tried searching, I know what is what coming from the harness side, but what are the wires on the O2 Sensor? Mine are red, black, and white. I found a few articles that stated the Black wire was the sensor wire. I'm sure this has been asked a thousand times. S13 Redtop #62 ECU and the Skinny 02 Sensor (Denso) Currently, I have it wired up as White to Ground, Red to 12v, and Black to Signal. I'm trying to get my timing set correctly and I'm unsure if its acting up because of the 02 sensor. It idles at 850~900 but I can see the ECU trimming/adding timing. TPS is set to .5v closed and slightly over 4v WOT. It feels like its hunting a bit at idle, like the timing is slightly off, but when the ECU calms down, its right at 15* BTDC...if i leave the TPS plugged in, and rev to about 1200 RPMs, its right at 15* BTDC. Using the #1 plug wire method of checking the timing. Any thoughts? Thanks in advance.