Help for the searchers, alternate names.

Oxygen Sensor, Lambda Sensor, O2 sensor, A/F Ratio Sensor, Narrow and Slow A/F Ratio Sensor, Not a Fast and Wide Lambda Sensor

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I figured it was time to have a dedicated Stagea lambda sensor selection, buying, wiring and fitting thread. There is a lot of info but it is spread out in a number of incomplete threads. So I hope this one will cover everything, with your help of course.

I bought a new lambda sensor from my local Repco yesterday, ACA brand part number ROX207 for an EL Falcon cost $77.97 inc GST. It has 3 wires, 2 black and 1 blue. I will cut the wires and connect it to the Nissan plug via connectors as stainless steel wires do not take solder. They are stainless steel to take the heat, copper or aluminium would simply melt.

Pictures would be here, but I can't figure out how to upload.............


cheers

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Hi SK,

Ive bought a Repco 'ACA ROX207' oxygen sensor to suit Ford EL. Cost $81. Has 3 wires connecting to a plug; 1 blue wire (by itself in the plug connection), and 2 black wires side by side next to the blue wire.

I hope this is the right one!

Having the Stagea serviced in a few days time (80000km), adding a small body 3inch Catco cat converter (from batmbl), a 3inch stainless single turbo to cat dump pipe (from Just Jap off ebay), a Black Widow car alarm (for insurance sake; thanks Shannons!), a Hybrid EBC (off ebay), an Apexi SAFC II (off ebay), and an R34 GTT intercooler (from member: Ed). With a K&N pod filter and Dayz Special Edition cat-back 3inch mild steel exhaust it should all run well together.

With all of the above fitted and dynoed, hopefully power increases a fair bit, and the fuel issue is 'sort of' fixed with the new O2 sensor.

Once it's all tuned I'll post up a detail of litres per 100kms. And maybe a dyno graph, if it's impressive enough!

Brendan

Once I finish my works website you will be able to buy one off us online a bit cheaper then that, same sensor and used one on mine already with great success

Just from memory around $70 but thats with three proper heat shrink connectors

I cut off the Ford plug and then I checked the lambda sensor plug (three pin) on the Stagea and BINGO it is the same as the lambda sensor plug on the R32GTST. So I cut off the old R32GTST lambda sensor and then used a crimp joiner to attached the three wires, 2 X blacks to the outside pins and the 1 X blue to the inside pin.

Picture will go here when I figure out what's wrong with the upload facility.

The lambda sensor is 22mm, and I have a big 22mm ring spanner that should do the job just nicely. Remove the old lambda sensor and screw in the new one.

Picture will go here when I figure out what's wrong with the upload facility.

Then plug the new lambda sensor in,

Picture will go here when I figure out what's wrong with the upload facility.

Fill the Stagea up on the way to work tomorrow and check the fuel economy over the next week or so. I will post up before and after results

cheers

After replacing the o2, how should i go about resetting my ECU?

I am not going to bother, I don't think it makes any difference when you don't have any error codes.

You can unplug the ECU, that resets it. Or unplug the battery and stomp on the brake pedal (with the igntion switch on) a few times to make sure all the power is drained. I hate doing that as the clock looses its time and the radio looses all of it preset stations.

cheers

For some reason, the bolt in my ECU plug has had its head snapped off.... is it time for me to dremel the bastard out (something i am not happy to think about with all those wires there...)

SK - Do O2 sensors wear out ? Would it be good practise to change the one on my 15 YO R32 ?? Even though it seems to be running fine ?

My guess is someone has tried to tighten the bolt up with the plug not aligned. I would drill it and use an easyout. Much neater.




Nissan recommends changing them every 40,000k's. They don't "wear out" in a mechanical sense. They just get contaminated and don't read the A/F ratios properly.


cheers

Or I can reset it for you with my laptop if you'd like..

Ian

Got my new o2 today! YAY (original nissan from jp)



Will go ahead and do the swap this weekend, saturday morning. Will do spark plugs at the same time.

Ill take photos while i do it and do a little write up for everyone...its original so its litterally screw out - screw in.

Anyway, ill post back saturday night,

Alex

The gallery is working, so here is the picture of the Falcon lambda sensor with the R32GTST plug fitted to the wiring harness using crimp connectors.




The 7 day fuel economy test is underway, results tomorrow.


cheers

How are you going getting the old one out? I tried today and gave up getting a spanner in.. I've rung around town and nobody seems to have the 'oxygen sensor socket' in stock either...


Edit: and slightly off topic, SK - How did you get the gallery working? Is there something special you have to do/be to post images there? I just went over to it, and cant find any button or menu to upload images...

Ian

Over the weekend i went to try to install my new split dump and front... it ended up not fitting so on the way putting everything back, i put in the new O2...


Unfortunatly, this means i have no photos or anything, but its relativly easy to remove your dump pipe (i could probably do it now in around 1 hour)

The OTHER way around it could be like this...

1. remove engine heat sheild
2. remove the top three bolts holding in the brace, take brace off
3. undo the screws holding on the heat cover on the dump pipe
4. replace o2
5. reverse

I could probably help you out doing it if you want, but not this weekend (too many essays due)...next weekend would be fine.



Ill give my fuel economy report too... still yet to fill her up. I replaced my spark plugs at the same time, the old one were pretty rooted.
4.