O2 sensor wire replacement????????????? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

DamnedButDetermined · 06-02-2004, 05:38 PM

Both of my S13's have a cracked and straight up nasty looking O2 sensor wire. I can't imagine it is giving good information to the comeputer, So i was thinking of replacing it. Does anyone know what kind of wire I should use for this?

I know if the resistance if off the computer will be getting a false reading so i want to be as close as possible.

Any Ideas?????

DuffMan · 06-02-2004, 05:40 PM

Just get shielded wire from any store that sells wire. The shielded part has to be connected to a ground source.

carcrossy · 04-28-2009, 12:33 AM

Quote:

Originally Posted by DuffMan

Just get shielded wire from any store that sells wire. The shielded part has to be connected to a ground source.

I realize this is old but is this correct for an s13? connect the o2 sensor wire to ground?

carcrossy · 04-28-2009, 01:07 AM

the reason I ask is because my O2 sensor is reading about .8 volts but sends a 0 volt signal to ecu. i think some of the shielding wire came in contact with the center wire of o2 sensor wire where I mending the the wire. it would send the 0 signal even when i disconnected the o2 sensor. I finally just cut the wire clean so the center wire does not touch outer shield. My 02 sensor has a default reading of .32 volts and car run quite good even though 02 sensor not hooked up.

carcrossy · 05-01-2009, 04:15 AM

According to wiring diagram , the outer shield is grounded.

THe O2 sensor readings are supposed to be ignored by ecu during idle but for some reason the ecu starts to use 02 sensor readings during idle when the outer shield touches the conducting core.

Anyway I separated the core from the shield and soldered the splices resulting in the following:

The car does not have the extreme stumbling but the idle does hunt a bit after the car heats up.

I made the mistake of soldering the splice where copper wire connects with stainless steel core of shielded original o2 sensor wire. When the car gets to a certain temperature during idle, the O2 reading starts to bounce around and the rpms hunt from 800 to 900. I assume the copper and steel together inside the solder generate some voltage at a certain temperature. this problem goes away when i disconnect the o2 sensor. All this is happening at idle where the o2 sensor is supposed to be ignored.

In theory solder is not supposed to connect steel and copper but it does a pretty good job except for current that is created. anyway, butt connectors are needed.

06-02-2004, 05:38 PM	#1
DamnedButDetermined Zilvia Addict Join Date: Oct 2002 Location: Jax, Fl Age: 43 Posts: 637 Trader Rating: (1) Feedback Score: 1 reviews	O2 sensor wire replacement????????????? Both of my S13's have a cracked and straight up nasty looking O2 sensor wire. I can't imagine it is giving good information to the comeputer, So i was thinking of replacing it. Does anyone know what kind of wire I should use for this? I know if the resistance if off the computer will be getting a false reading so i want to be as close as possible. Any Ideas?????

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06-02-2004, 05:40 PM	#2
DuffMan Post Whore! Join Date: Oct 2001 Location: in a cardboard box Posts: 2,517 Trader Rating: (0) Feedback Score: 0 reviews	Just get shielded wire from any store that sells wire. The shielded part has to be connected to a ground source.

04-28-2009, 01:07 AM	#4
carcrossy Leaky Injector Join Date: Apr 2009 Location: east Posts: 52 Trader Rating: (0) Feedback Score: 0 reviews	the reason I ask is because my O2 sensor is reading about .8 volts but sends a 0 volt signal to ecu. i think some of the shielding wire came in contact with the center wire of o2 sensor wire where I mending the the wire. it would send the 0 signal even when i disconnected the o2 sensor. I finally just cut the wire clean so the center wire does not touch outer shield. My 02 sensor has a default reading of .32 volts and car run quite good even though 02 sensor not hooked up.

05-01-2009, 04:15 AM	#5
carcrossy Leaky Injector Join Date: Apr 2009 Location: east Posts: 52 Trader Rating: (0) Feedback Score: 0 reviews	According to wiring diagram , the outer shield is grounded. THe O2 sensor readings are supposed to be ignored by ecu during idle but for some reason the ecu starts to use 02 sensor readings during idle when the outer shield touches the conducting core. Anyway I separated the core from the shield and soldered the splices resulting in the following: The car does not have the extreme stumbling but the idle does hunt a bit after the car heats up. I made the mistake of soldering the splice where copper wire connects with stainless steel core of shielded original o2 sensor wire. When the car gets to a certain temperature during idle, the O2 reading starts to bounce around and the rpms hunt from 800 to 900. I assume the copper and steel together inside the solder generate some voltage at a certain temperature. this problem goes away when i disconnect the o2 sensor. All this is happening at idle where the o2 sensor is supposed to be ignored. In theory solder is not supposed to connect steel and copper but it does a pretty good job except for current that is created. anyway, butt connectors are needed.