Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post

GLoBaLReBeL420 · 05-25-2017, 02:39 PM

So, I've already read and done my research, but hoping there might be some kind of known workaround for my issue . .

What I got...
Engine: Early Model SR20DET Blacktop
Wiring Harness: Early Blacktop
ECU: Early Redtop E62 ECU

It seems after researching that my problem with the car running super rich is due to me using an E62 (Early Redtop ECU) with my Early Blacktop wiring harness.

Link for research = O2 Sensor Issues

With that all in mind let me tell you what I've tested . .

O2 sensor plug wiring: All get perfect continuity and setup correctly on plug

Different O2 Sensors: I've tried both a 4 wire to 3 wire Fatty O2 with no luck, and a 3 wire Skinny O2 with no luck as well. Both sensors when head to a butane torch flame provide readouts, but the ECU doesn't get anything.

At this point I would like to test out an E5/E6 ECU (Early blacktop) to see if the above link is correct in that I need it to complete the O2 sensor circut and provide the ECU with a reading.

But, until someone in SoCaL can help there, I was hoping someone else might have any idea on what else I can do to resolve this issue? Any help is greatly appreciated!!!

-Matt

05-25-2017, 02:39 PM	#1
GLoBaLReBeL420 Leaky Injector Join Date: Aug 2005 Location: Orange,CA Posts: 117 Trader Rating: (2)	SR20DET O2 Sensor and ECU issue So, I've already read and done my research, but hoping there might be some kind of known workaround for my issue . . What I got... Engine: Early Model SR20DET Blacktop Wiring Harness: Early Blacktop ECU: Early Redtop E62 ECU It seems after researching that my problem with the car running super rich is due to me using an E62 (Early Redtop ECU) with my Early Blacktop wiring harness. Link for research = O2 Sensor Issues With that all in mind let me tell you what I've tested . . O2 sensor plug wiring: All get perfect continuity and setup correctly on plug Different O2 Sensors: I've tried both a 4 wire to 3 wire Fatty O2 with no luck, and a 3 wire Skinny O2 with no luck as well. Both sensors when head to a butane torch flame provide readouts, but the ECU doesn't get anything. At this point I would like to test out an E5/E6 ECU (Early blacktop) to see if the above link is correct in that I need it to complete the O2 sensor circut and provide the ECU with a reading. But, until someone in SoCaL can help there, I was hoping someone else might have any idea on what else I can do to resolve this issue? Any help is greatly appreciated!!! -Matt Last edited by GLoBaLReBeL420; 05-25-2017 at 03:14 PM..