Jump to content
SAU Community

O2 sensor

JaFF

By JaFF,
in General Maintenance

 Share

Recommended Posts

ascenion24 Enthusiast

ascenion24

Posted
Posted (edited)

Jeez... 20 pages.

Why do people always blame the O2 sensor when their fuel economy sucks.

It could be literally hundreds of things that affect you fuel economy.

If you just start replacing things bit by bit, you could end up spending thousands of dollars on new parts and still not fix the problem.

If you have a problem, you need to solve it correctly! not the shotgun approach.

And to do this properly, you need the right tools (unfortunately for most)

What I would do is firstly get an AFR log done, and actually confirm that the car is running rich, who knows you may have a fuel leak somewhere.

If you are indeed running rich then you can start looking into things that could possibly effect fuel economy, could be a leaking injector, dodgy maf, O2 sensor...

An AFR log will tell you if its your O2 sensor or not, because once your in open loop mode your O2 sensor is not used, so if your car still runs rich in open loop mode then you can rule out your O2 sensor.

Get yourself a copy of the nissan service manual, this will show you how to test sensors, it will give you voltage readings that sensors should be outputting in various conditions and get yourself a multi meter, a $10 one from jaycar is perfectly fine and go to town on the car.

If you have a cable to connect the car to the PC I'm pretty sure there is free software you can get to log all the signals, this will be an alternative and probably easier way to see what signals are being feed to your ECU.

Edited by ascenion24
  • 4 weeks later...
  • Replies 524
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

Stagea_Neo
Stagea_Neo

I got 358km so far and the fuel light just come on, fair improvement over pushing to get 300km. I attribute this more so to fixing the hoses. I guess the 02 sensor, helped a bit + cold temps of l

zzsprade
zzsprade

Out of curiousity (as I am having a similar problem) where are the two o2 sensors exactly located? -Alex

JAPCAB
JAPCAB

I went down to Petroject down in bayswater, picked up a universal 3 wire O2 sensor for $99 brand new. It didn't have the harness on it, but it was a piece of piss to join the wires together, i just ch

Posted Images

stimps Collaborator

stimps

Posted
Posted

ok, so ive read all 20 pages i think, and im totally confused, but.....

My 32 GTST is idling like a bitch and running rich and even cuts out often.

22690-73L11 is the Nissan part number for the sensor on the R32 RB20DET? and you cant get one in australia and there is no Bosch or NTK direct replacement?

I ordered one for a rb26dett from NTK thinking it was the same and of course its different, the new one that arrived just looks like a standard VL commodore one, 3L. right wires and colours and plug but wrong sensor body.

So am I right in asuming that if i buy the OZA23-D2 FORD EL one it will fit but ill have to change the wires??

so confused it hurts lol

cheers.

  • 4 weeks later...
JoelyMoley Mentor

JoelyMoley

Posted
Posted

just got my o2 sensor, luckily enough my local auto1 had one sitting their waiting for me as somone ordered it and never collected it :) just waiting for the dump pipe to cool alittle before i go install it *prays for better fuel economy*

elskyline33 Rookie

elskyline33

Posted
Posted

Well iv been reading through all the pages and i just bought a r33 turbo.. and fuel seems to be a b...ch so far and im only getting like 200km a full tank running on 98..

and my fuel gauge goes down fast then back up abit then down

i asked today for a o2 sensor from auto pro in Malaga and they had one for $140

But any idea's were to get it installed coz im not keen to do it myself??

Any places north side ??

JoelyMoley Mentor

JoelyMoley

Posted
Posted
Well iv been reading through all the pages and i just bought a r33 turbo.. and fuel seems to be a b...ch so far and im only getting like 200km a full tank running on 98..

and my fuel gauge goes down fast then back up abit then down

i asked today for a o2 sensor from auto pro in Malaga and they had one for $140

But any idea's were to get it installed coz im not keen to do it myself??

Any places north side ??

:S what a rip, i got mine for $100! anyway its piss easy to install mate, just look behind your turbo and you will see the sensor sticking out of the dump pipe, just disconnect it, un screw it (can be a bitch, mine wasn't to bad but the WD40 did see some use) and screw the new one on! not rocket science! :ermm:

Phil-085 Enthusiast

Phil-085

Posted
Posted (edited)

I got a direct replacement one for my 32 GTST for $100 unpluged and unscrewed the old one and screwed in and pluged in the new one. No cutting of wires and was perfect fit

If anyone is chasing one just PM me and i'll get hold of one.

Edited by Phils32
elskyline33 Rookie

elskyline33

Posted
Posted
:S what a rip, i got mine for $100! anyway its piss easy to install mate, just look behind your turbo and you will see the sensor sticking out of the dump pipe, just disconnect it, un screw it (can be a bitch, mine wasn't to bad but the WD40 did see some use) and screw the new one on! not rocket science! :(

yeh i was having a look at it today..looks like sumfin i can do

were did u get urs for $100 ??

elskyline33 Rookie

elskyline33

Posted
Posted
I got a direct replacement one for my 32 GTST for $100 unpluged and unscrewed the old one and screwed in and pluged in the new one. No cutting of wires and was perfect fit

If anyone is chasing one just PM me and i'll get hold of one.

What palce did u get that done ??

  • 2 weeks later...
  • 2 weeks later...
GDZ-14R Rising Star

GDZ-14R

Posted
Posted
Unfortunately the Bosch universal replacement "0 258 005 726" for the 33 and 34 GTR's is not available in Australia anymore... So either adapt the NTK OZA395-E2 or get genuine - sux!

Just thought i would provide some feedback on the NTK 02 sensors i mentioned in the quoted post above for R33-34 GTR's. They were easy to setup and tune. Need to unpick one of the connectors and and get it into the factory front connector from memory. Some of the wires are a lil short to fit into the factory guides, but not by much.

Very easy to set up, and cheap too. Speak to Andrew @ Kudos Motorsport and he will fix you up with the awesome deal he has on at the moment.

  • 1 month later...
CeJay Grand Master

CeJay

Posted
Posted
No. They only have one, in the dump pipe itself.

The other sensor in the cat is just an overtemp switch, cat gets too hot it turns the idiot light on.

Only the '26 has two.

Dragging up an old comment, but was wondering can the overtemp sensor be removed when replacing the cat? As it looks like the cat I'm interested in doesn't have a spot for the overtemp switch.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      One Headlight isn't working - Driver Side Fuse Keeps blowing

      By GTSBoy · Posted

      Yeah, but knowledge of one wire's insulation worn through to short on earth implies the possibility of other wires doing the same. I had my power steering die, because the wire that runs to the solenoid valve on the rack runs in the same loom as the power wire for the O2 sensor. And when the O2 sensor/wire did something stupid and burnt part of that loom to death, the only indication was the shit(ter) fuel economy and the heavy steering. It took deep excavation of the looms in the bay to find the problem. Not wear through in that case, but similar shit.
    • MBS206
      Mistakes were made, my R34 Story

      By MBS206 · Posted

      Ah, I thought he'd wired it to one of the spare ECU inputs! Too long ago since I read that post, ha ha. I've been arguing with radiators, harmonic balancers, alternators and rust since reading it.
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      Correct. The ECU cannot read oil temp. (Well, I think it probably can in some situations. I did have the thought of potentially repinning the ECU when I was doing oil pressure). I am using this into the MPVI dongle, so that the MPVI dongle can read oil temperature. It is attached to a VDO gauge which is obviously calibrated to whatever curve the sender actually is using. This would be easy if I could setup a table of voltage to temperature like many sensors, but it appears I cannot do this and can only setup the transform rule which appears to be Input (voltage) x Multiplier, and add an offset. This to me means it MUST be linear. So it may be a complete waste of time wiring this into the ECU. The idea was that the MPVI3 has standalone logging. I wanted to use this instead of a laptop with serial cable (for wideband) for long datalogs. Given the wideband also has electric interference, I may never trust this either in a world where the serial wideband and the analog output wideband do not agree. Last time I did a trace I could see the two wideband traces follow each other, but one was a little leaner than the other. I plan on playing with voltage offsets and actually driving the thing to see how close they correlate. If they never correlate... then, well, maybe I'll never use either. Ideally I'd like to have the Analog wideband read ever so slightly leaner than the serial one, because the serial one is 'correct'. Tuning the car to be ever so slightly too-rich would be the aim. Not needing to have a laptop flying around in the footwell connected with cables is... an advantage. About the only one from the forced upgrade to MPVI3.
    • MBS206
      One Headlight isn't working - Driver Side Fuse Keeps blowing

      By MBS206 · Posted

      Hopefully not, since he knows the fuses work ha ha ha
    • GTSBoy
      Mistakes were made, my R34 Story

      By GTSBoy · Posted

      I don't think he's got it on a gauge and on the ECU. I think he's got it on the gauge and on the HPTuners DAq thingo. Remember, we're talking about oil temp here, not something that the ECU is actually interested in for its own sake.
×
×
  • Create New...