O2 sensor

[chin0o]

I've just spent all weekend trying to get my 02 sensor off with no luck...

I've used the special socket and it's on that tight that it's just stripping back the thread.. Tried WD40 to loosen it and even with a breaker bar and a 22mm socket it still won't budge!

What are my options?

[bayslideblue]

Replaced my O2 sensor with a nissan universal one from repco, worked ok for 1000km but then started bugging up. Was slightly hesitating at cruising speed then fuel economy went bad and finally engine light came on at cruising speed. My tuner said unplug the sensor and see if the problem is still there, so I did and that fixed it.

So now I'm going to have to replace it again. And this time it's going to be geniuine.

universal =

[_Ryan_]

'93 HCR32 GTST OZA395-E2 $76.50ish from Bursons trade price, plug fits.

Just confirming for everyone, as this thread lacks R32 info. If a mod could add it to the first post in this thread it would be good.

[85URK]

I just had a look at mine this arvo quickly, been told the front one is playing up, but what did the stock RB26DETT come out with for R33? mine has o2 sensor at the rear with 3 wires, front one has only 2 wires coming from it?

which one has been changed previously? im guessing the one with 3 wires (i.e rear) has been replaced at some stage.

Now if going to buy one, are the front and rear ones the same on R33 gtr? or different part numbers?

[wardiz]

on the R33 GTR, your o2 sensors should have 3 wires.

The one with 2 wires has been changed obviously to another type of sensor.

Front and rear are the same but with different connectors thus the different part numbers.

This link should help you : http://wardiz.over-blog.com/article-34295259.html

I just had a look at mine this arvo quickly, been told the front one is playing up, but what did the stock RB26DETT come out with for R33? mine has o2 sensor at the rear with 3 wires, front one has only 2 wires coming from it?

which one has been changed previously? im guessing the one with 3 wires (i.e rear) has been replaced at some stage.

Now if going to buy one, are the front and rear ones the same on R33 gtr? or different part numbers?

[cvet]

good

[Brezza]

does anyone know whether the O2 sensor is a wideband or narrow band?

i want to put a air fuel ratio gauge on my GTR

cheers,

[Moodles2]

^^ both are narrowband

[realor]

I replaced mine recently with a universal one from EL Falcon. Originally tried to solder wires but it's f**king impossible! It comes with a joiner though so i used that instead.

It's working pretty well, fuel economy is better (not sure by how much yet) but yeah see how long it lasts.

PS. Use anti-sieze on all exhaust bolts makes your like much easier getting them off later, thankfully whoever worked on my car did use it and it was piece of cake to get the old one out.

[GTaaargh]

on the R33 GTR, your o2 sensors should have 3 wires.

The one with 2 wires has been changed obviously to another type of sensor.

Front and rear are the same but with different connectors thus the different part numbers.

This link should help you : http://wardiz.over-blog.com/article-34295259.html

This is a good article on changing the O2 sensor on an R33 / R34 GTR. I've added it as a link to my GTaaargh O2 sensor page

If you find any part numbers that fit skylines or other useful links, let me know using the link at the bottom of my web page and I'll update the table. It saves trawling through 19 pages.

James

[Damit]

yay mine is dead again

and i always know when mine dies because of this

it averages on idle between 5-10% injector duty when its normally less than 1.5%

[OMGGTR]

Here you have it NTK genuine nissan part $77

* Nissan Skyline, R32 GTS-t

* Nissan Skyline, R32 GTS-4

* Nissan Skyline, R33 GTS25-t

http://www.kudosmotorsports.com/catalog/ng...25det-p-42.html

Edited December 20, 2009 by v8tzr

[Damit]

yeah i know thats the i had in there put in in a few months ago

but need one quick so got an el one and will just wire it in

[CeJay]

So the r32 rb20det and rb25det, came with two o2 sensors? one near the dump pipe? and one further down the exhaust, to quote the shop that tuned my car, they think my 02 sensor is lazy, so I suppose it's on the way out.

[heller44]

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.

[08r3308]

i got mine from kudos as well

perfect fit

[DTSNR32]

How much does it cost roughly to replace the 2 o2 sensors on a 32gtr. I have 2x genuine nissan ones sitting here ready to go in. Cheers guys

[ariandy]

Hey guys,

I have apexi turbo timer with O2 sensor voltage reading feature. How do i know from voltage reading when my sensor are bad?

When i put the ign into ACC (engine isn't started yet), the display reads 0.2 V from O2 sensor. Is it normal? I have 3 inch cat exhaust on my RB20DET, I thought when engine is off, outside air would came inside and make the sensor reads rich near 1 V (a lot of oxygen). Any thoughts?

Thanks

[FTO]

Damn, this is a sticky? Was looking for a replacement O2 sensor for a RB25DE..got to page 12! total confusion.

Guys the O2 sensor only controls EFI in closed loop mode..cruise or light throttle, anything else is determined by your map values and if it's OEM then rich is the key word..to save warranty claims, aftermarket..you need a tune. Sooo your not going to see huge increases in economy, unless you do a lot of highway driving. This means turbo or non-turbo doesn't make a difference as far as the O2 sensor is concerned.

Also like MAP sensors or ECU temp sensors, they are specific to each manufacturers specs, even though they operate in the same range ie. 0-1v NB O2 sensors..0-5v MAP sensors..you need a replacement that duplicates the same specs...

BTW the lower sensor doesn't have anything to do with EFI, it monitors CAT integrity in a narrow band above 1200degF.

Thanks Kudos..going to place an order.

Edited February 13, 2010 by FTO

[GDZ-14R]

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!