Ok so i was playing with my Rtek today and noticed that my O2 sensor is WAY off. It likes to creep up slowly to about 3.2 3.3 volts over a about 2 mins. then it just kinda stays there. My Diag function on the Rtek shows an O2 r/l check box.

If i disconect the O2 sensor it reads .10 volts all the time.
I switched to another almost new 02 sensor and same ****
The only thing i can think of is it that the wireing is shorted out some place and its picking up extra voltage.

Does this sound right or am i missing something.

I think im going to hook the narrow band out put of my wideband directly into the ECU and see what that does. My Manual says this should be connection 2D at the ECU which is a Gy Green/ yellow?????, but why is it in loercase?????) wire.

Does this sound like a good fix or am i barking up the wrong tree?

Augie

 

You probably do have a short somewhere in the wiring of the O2 sensor.

That sensor should cycle between .1-.9v. Low is lean, high is rich. If it's putting out a low voltage, that means the sensor is reading lean (excess oxygen), and in turn telling your car's computer to add fuel.

I've never heard of a properly functioning O2 sensor reading higher than 1v. Since you said you tried a known working one, there's probably a problem in the wiring.

Hope it helps.

James

EDIT: I don't know anything about the RTek, so I don't know if anything I just wrote will make a difference.

 

Ok when i check the connector 2D is aBlack wire so if the color code is Gy how the hell does that work???