1G O2 harness wiring

[Rooster]

All these wires are making my head hurt. Can anyone shed some light on how to proceed?
I was informed by my tuner that the AEM UEGO wideband sensor is junk and messing with the readings for him to be able to tune the car accurately. That being said i was told to revert the wiring of the Wideband to the EGR pin and put the stock o2 harness back together. So i follow the wires from the ECU pin 4 and the UEGO has been spliced into and soldered to the wire for pin 4. Easy enough just cut it out and rewire to EGR.. well then i run into the o2 sensor wiring near the ECU... what am i looking at here and why is there bare wire exposed... this cant be how it comes from the factory. Any way to clean this up so i can get the factory o2 set up properly again?

 

[Vegas Smith]

That’s actually shielding for the wire, I believe, to protect the signal or something. It’s not wire strands. There should only be one signal left to reconnect pin 4.

 

[Rooster]

That’s actually shielding for the wire, I believe, to protect the signal or something. It’s not wire strands. There should only be one signal left to reconnect pin 4.

Vegas i might as well pay you for diagnostics at this point. Someone make this guy a wiseman.

Anyways, youre saying theres something else i need to do to reconnect pin 4 properly? Or if i just cut the white coming from the UEGO ill be all set to rewite to EGR pin?

 

[AWD-Tony]

Correct. Only one wire to that input. If the other end isn’t connected to anything, it doesn’t matter

 

[Vegas Smith]

Vegas i might as well pay you for diagnostics at this point. Someone make this guy a wiseman.

Anyways, youre saying theres something else i need to do to reconnect pin 4 properly? Or if i just cut the white coming from the UEGO ill be all set to rewite to EGR pin?

If you want your stock narrowband to work then of course you would reconnect that to the o2 pin 4. The o2 has 4 wires, I believe, and I don't remember which one is the signal.

 

[Rooster]

If you want your stock narrowband to work then of course you would reconnect that to the o2 pin 4. The o2 has 4 wires, I believe, and I don't remember which one is the signal.

Sorry for my negligence, i didnt do any of the wiring on this car except trying to fix what the previous owner did. Is there more than one wire that connects to the ecu pin 4? I have 1 white coming out of it. I believe i have it all wired correctly (just finished up wiring it) but i want to make sure i didnt miss anything as im logging in with my tuner again tomorrow and dont want to have to stop because i fked up wiring.

P.s
I know each pin has 1 wire coming out, i just didnt know if something was supposed to spliced in or if im missing something.

 

[Vegas Smith]

Sorry for my negligence, i didnt do any of the wiring on this car except trying to fix what the previous owner did. Is there more than one wire that connects to the ecu pin 4? I have 1 white coming out of it. I believe i have it all wired correctly (just finished up wiring it) but i want to make sure i didnt miss anything as im logging in with my tuner again tomorrow and dont want to have to stop because i fked up wiring.

P.s
I know each pin has 1 wire coming out, i just didnt know if something was supposed to spliced in or if im missing something.

You'll almost never have multiple signal wires spliced into anything to my knowledge. So to summarize, move the signal wire coming from wideband (the wire that was connected to pin 4 originally) to egr wire, then reconnect stock o2 signal wire to pin 4. Only one signal wire each time.

 

[Rooster]

You'll almost never have multiple signal wires spliced into anything to my knowledge. So to summarize, move the signal wire coming from wideband (the wire that was connected to pin 4 originally) to egr wire, then reconnect stock o2 signal wire to pin 4. Only one signal wire each time.

Yeah thats how i have it. They spliced and soldered the signal from the wideband into the pin 4 without cutting the o2 if you follow me. There was 2 wires coming from pin 4, 1 going to front o2 other going to wideband.

Thanks again vegas!

 

[Vegas Smith]

Yeah thats how i have it. They spliced and soldered the signal from the wideband into the pin 4 without cutting the o2 if you follow me. There was 2 wires coming from pin 4, 1 going to front o2 other going to wideband.

Thanks again vegas!

That's funny. I remember saying in your other thread there was likely something wrong with the wiring. Haha
"There must be something wrong with the wideband wiring or it's not setup or installed correctly."
It's crazy that I've dealt with all this shit myself so at least now I can help others

 

[Rooster]

That's funny. I remember saying in your other thread there was likely something wrong with the wiring. Haha
"There must be something wrong with the wideband wiring or it's not setup or installed correctly."
It's crazy that I've dealt with all this sh** myself so at least now I can help others

Ik you need to be promoted to wiseman i swear. Who do i talk to about this. appreciate your all your help man.

 

[JPenny]

The bare strands are just shielding from interference noise to the signal wire inside like how rcas or coax cable for TV are. Wiring itself is a nightmare then add 20+ years of age and who knows how many people's hands makes troubleshooting horrible .
I'm glad Vegas was able to help you hes definitely got some knowledge

 

[Vegas Smith]

Ik you need to be promoted to wiseman i swear. Who do i talk to about this. appreciate your all your help man.

I have no business being considered a wiseman but thank you.