I am trying to monitor the stock wideband o2 sensors with my e-01 and the external signal harness...

I am hoping that there is a 5v signal wire that is going into the ECU for each sensor. From there I planned on tapping that wire and configuring the e-o1 to understand the 5v signal and convert it to an AFR...



Does anyone know the ECU pin outs for the primary wideband o2 sensors? And does anyone know if it is a 5v signal coming into the ECU or is the ECU processing the raw data coming from the sensors and creating that 5v signal internaly?

If I can get this to work it would be a great way to monitor AFR w/o having to purchase another wideband sensor and control box...

Thanks in advance!

Joe Kenefic
Fort Wayne, IN

 

The 2005's are the ones with the widebands. If you can sign up here:

http://www.nissan-techinfo.com/nissa...p?dept%5Fid=18

And get the 2005 EC and EN guides (engine control, and engine) then I can decifer it for you .. once you send them to me of course.

I have a wiring diagram made up for 2003-2004.5 vehicles, but the voltage ranges are 0-1V, and they provide little useful info.

Chris

 

the 2005 z has a stock wideband sensor ? or did i read that wrong ?

 

All 2005 and some 2004 Z's have widebands in the place of the narrowbands...pretty cool. Was working on my buddies 05 Altima SE-R the other day and noticed that he has widebands too.

 

able to be taped into and use a gauge like the innovative stand alone gauge ?

 

Anything is possible, you just need to do the research and development

Getting the 2005 manuals is the first step.

 

You would just have to figure out which wire carries the signal you want, and also to see how the output is, ie whether it is linear, easier, or not.

 

Yes, i know i brought this back from the dead, way back from the dead, but has anyone been able to do this, anyone able to convert the 0-2v output to be read from something like this:
http://www.dynotunenitrous.com/store...p?idproduct=67

 

With the Haltech we can read in the factory wide bands. Unfortunately, they are no good in the sub 13:1 range, so for the majority of people they are not helpful beyond idle/cruise tuning.

 

Well, isn't the haltech 2k or something? Lol. I would just get a wideband for 300, but i wouldn't mind using the dynotune af lean switch, it can turn off solenoids and turn off products in boost applications, but i want to read off stock sensors if that is possible.

 

My point wasn't to get you to buy a Haltech, it was explaining that we have access to the stock widebands and they are no good in the richer areas. So, for a safety switch to work in the rich AFRs associated with a boosted car, you will need an aftermarket wide band.

 

The switch that I posted only works in lean conditions. It is mainly for nitrous applications, but it states it can have applications in boosted vehicles. I am only interested in the lean side since that is what this particular switch can do. So you said we have access to the actual sensor? What ranges would they be and would the dynotune a/f switch work for 04.5 up? Thanks for the help, i really appreciate it Not too many people have the dynotune a/f switch.

 

^ If you have a safety switch up in the 13s and 14s while spraying nitrous and/or boosting... it is most likely too late

 

Do you think the OEM wideband sensors are adequate for a built NA engine?

Would there be any benefit in wiring a third party o2 sensor to the Haltech for an NA build?

 

Is that the range the stock widebands go to?


__jb, here are a couple threads about the stock wideband:
https://my350z.com/forum/engine-driv...2-sensors.html
https://my350z.com/forum/intake-exha...-question.html
https://my350z.com/forum/tuning/2213...deband-o2.html

Unfortunately, they are pretty dated. From the information I gathered, the stock widebands in 04.5 and up z/g only put out 0-2v, so their range is quite limited. I am not sure what that would cover. With aftermarket wideband, you can have a wider range since their output is 0-5v.

I am just wondering if the a/f switch will work even if it is stock wideband with 0-2v output, is there a narrowband on the 04.5 and up z/g?