6G Celicas Forums

Hello,
I am working on my son's (Turboman23) car.
I just had the wiring harness redone (Great work DR Tweak) and need to wire in the o2 sensor.

The original o2 had single wire, but new o2 has 4 wires (2 white, 1 gray, and 1 black). Dr Tweak sent a new single wire connector (plug) to wire them together.

I can not remember which one of the 4 wires to use to connect to the wire coming from the ECU?
Can any one help with this?

2nd question, prior to the new harness, my son's codes showed Knock sensor, he has replaced wiring and knock sensor what elso could cause this? Also CEL stays on all the time.
Thanks,
Lee

This post has been edited by turboman23: Jan 18, 2009 - 5:37 PM

whats the current code?

are you sure it wasnt a 2 wire O2 sensor as stock?

Are you sure its 4 whites or 5 wires total? I remember the 2 whites was for heating up the O2 if your ECU supported it. The other 2 was for ground and signal back to ecu.

o2 wasn't hooked up when we got the car, and wire(s) was cut/missing. After getting harnes rebuilt, we noticed that we had forgot to about o2 sensor. The person that did the rewire of the harness directed us to which wire to hook to , the shield wire. He said hooking up to the sensor with 4 wires was fine, but I am not sure which one. And as it is a weekend, I can't reach him.

I am getting codes 21 and 51. I was getting a 43 but that is because he has a push button add to start the car-we are going to change this.
Thanks Lee (Turboman23's dad)

OOPS I meant .....4 wires total 2 white 1 gray 1 black-- I edited my first post to correct wire colors

This post has been edited by turboman23: Jan 18, 2009 - 5:38 PM

The signal wire should be the black one.

-Doc

Thanks,
I was going to call you tomorrow about this
I still need to call though about the starting issues(removing push button).
Thanks Again, Lee