R34 O2 Sensor

[drifter17a]

All,

 

My r34 had an engine light on and it seemed the o2 sensor was dead as there was no input on my apexi turbo timer on A/F.

 

in the uk the cost of O2 sensor was around £150 so after long search of forums, I ended up buying one for nissan micra 1.3 1998 and fitted after changing the wiring on the O2 sensor so it could connected to the ecu connector.

here is another example of it in the uk confirming the o2 sensor works on Micra as well as Skyline

https://www.ebay.co.uk/itm/OXYGEN-OXY-O2-SENSOR-for-NISSAN-SKYLINE-R33-RB25-SERIES-1-Series-2-RB25DET-/301405627170

 

The car was ok but still felt as it was running rich so I changed the turbo boost pressure sensor and still seems to be mis firing .

The Boost pressure sensor item number was PS660-1 Hitachi boost sensor which match nissan navara 2.5 td 2002-2005.

It costs £80 from a distributer in the UK if bought for skyline so i bought it for nissan navara 2.5 td 2002 and it was half the price and exact same part number.

question is, if the part number is the same, should it produce a same output regardless of car it was on ?

 

Could I have messed up by installed an O2 sensor from another car? I suppose the reading will be the same so it shouldn't matter.

Edited January 23, 2019 by drifter17a

[GTSBoy]

O2 sensor is likely to be fine.  Hell, 20 years ago I put one from a Ford onto my RB20 because it was the most cost effective way to do it.  As long as the sensor is the same tech, it's fine.  But where they are not the same, it's not possible.  The sensors on Neos are quite different from the older ones, for example.

The boost sensor, if it has the same part number, will be the same.  Couldn't be different.  Couldn't cause your problem, unless you damaged/stretched a loom or pin or something while changing it.  Also, they are completely unlikely to need to be replaced at any time, so you wasted your time and money there.

[Rusty Nuts]

10 hours ago, drifter17a said:

question is, if the part number is the same

Then its the same part, can't believe this question, you are kidding right.

[drifter17a]

On 1/24/2019 at 5:37 AM, Rusty Nuts said:

Then its the same part, can't believe this question, you are kidding right.

trying to narrow down the issue by eliminating anything that could cause it .

 

I think it is due to having blow off valve so AFM is accounting for air that is getting released hence running rich and missing every  now and then. does this make sense to you guys ?

[KiwiRS4T]

Blow off valve is stock. Do you mean you have an aftermarket BOV that does not recirculate?

Look up how to get fault codes from your ecu instead of trying to guess.

 

[drifter17a]

Aftermarket bov( blitz)

 

no fault code but boost leak as i can see the boost doesn’t go above 7psi whilst controller is set to 11 psi

 

i think it is the bov spring

 

i opened a sperate thread on this topic

[GTSBoy]

If your BOV is external venting and you have an airflow meter, then the setup is wrong and you need to get rid of the BOV and/or replace it with a recirculating BOV.  This is not rocket surgery.  These lessons were learnt in the 1990s and are excruciatingly well documented on this and every other such site.