Wire question....

[rusty ol ranger]

Pulled off rusty 2.0s upper intake this morning......and found this wire....

That has a bare spot that is more then likely grounding out aginst the lower intake. What wire is this? What does it do? It comes out of the main harness and disappears down toward the chassis/trans.

 

[Dirtman]

Sir, thats a dish rag.

 

[rusty ol ranger]

Sir, thats a dish rag.

Oh shit it is? My bad. Bern hangin out on to many jeep forums.


No, the orange wire that is plainly visable

 

[dirtymike]

does it have current on it.

 

[rusty ol ranger]

does it have current on it.

I dont know didnt check it. But i cant find s orange wire on a wireing diagram either.

 

[adsm08]

That is that O2 ground I told you to look for a month ago.

 

[rangerenthiusiast]

That is that O2 ground I told you to look for a month ago.

Well... he found it!

 

[Dirtman]

That is that O2 ground I told you to look for a month ago.

 

[rusty ol ranger]

That is that O2 ground I told you to look for a month ago.

I couldnt find it before.

 

[bobbywalter]

well then.

 

[rusty ol ranger]

Not to mention, ill have to look again but i dont think it bolted to the back of the head.

But either way. Now im wondering if i should proceed as planned, or just fix the wire, toss the intake back on and give it a shot.

 

[bobbywalter]

bad info in.

bad info out.


maybe its extra from a previous repair. the heater circuit was working? what voltage is it putting out..?? its a replacement sensor so i did not think the intake around the wires was plugged from oil contamination and starving airflow for voltage generation. dont remember what was reported. i do remember asdm telling you to make sure it was connected and working...and the heater circuit..and the reporting line...


kind of necessary with closed loop operation with no custom programming.

so erratic rubbing could explain the angry wrath of the ranger fairies you have been experiencing.

 

[rusty ol ranger]

It was a new O2. The wire looks factory, its all loomed in with the rest of them.

I did not get an O2 code with the old sensor, but do with the new (lean).

 

[adsm08]

It was a new O2. The wire looks factory, its all loomed in with the rest of them.

I did not get an O2 code with the old sensor, but do with the new (lean).

Lean is indicated by low voltage on the circuit. The O2 ground is needed or the computer can't see the voltage coming from the sensor.

Think about it like using a volt meter to look for power. If you don't have your negative lead grounded you can probe all the power you want, and you won't see it.

This wire would be the negative lead to the computer's volt meter.

 

[rusty ol ranger]

Lean is indicated by low voltage on the circuit. The O2 ground is needed or the computer can't see the voltage coming from the sensor.

Think about it like using a volt meter to look for power. If you don't have your negative lead grounded you can probe all the power you want, and you won't see it.

This wire would be the negative lead to the computer's volt meter.

So since the wire isnt carrying voltage, the ECM thinks the motors lean...therefore dumping tons of fuel to compensate, therefore causing rusty the person a PITA. Correct?