304 O2 Sensor

[Hillerus]

I recently purchased a V8 out of a VQ Statesman for a project. I bought a new harness and I am in the process of replacing all the sensors as well. The engine had a single wire 02 sensor, so I bought one of those, however after checking the new harness, it has a plug for a two wire sensor.

After looking at some diagrams online, the black wire is just an earth for the sensor, which I would imagine is earthed at some point on the engine, as it didn't appear that the earth wire returned to the ECM.
It may sound like I have answered my own question, but I take it I can just use a 2 wire sensor? I'm also guessing the reason for the change was better earthing, and not some changes to programming that would prevent me using a two wire sensor with the original single wire VQ ECM?

Thanks for your time.

 

[boostin01]

im on my 4th vq, none have had 2 wire 02 sensors...sure your loom is from a vq? from vn-vs v8 engines, ive never seen a 2 wire 02 sensor, think youve got the wrong plug...on a vn v6 for example, which runs a 2 wire sensor, the other wire earths to the sensor.

 

[yxyx64]

im on my 4th vq, none have had 2 wire 02 sensors...sure your loom is from a vq? from vn-vs v8 engines, ive never seen a 2 wire 02 sensor, think youve got the wrong plug...on a vn v6 for example, which runs a 2 wire sensor, the other wire earths to the sensor.

........hmmm, I have only seen 2 wire on VR V8.........

 

[Immortality]

Yep, the 2nd wire is an earth wire.

 

[Hillerus]

Cheers fellas, I'll just grab a two wire sensor then. If anyone needs a single wire sensor, shoot me a PM.