I need to know what o2 sensor will work with a U12 ecu. I have been told that it's the JDM skinny o2 sensor, but that the z31 sensor will work. I have looked for them, and there are several different ones. Is there a particular one that I need, or does anyone have a part number?

TIA!

I'd call JGY or Mossy. They both sell what you need.

OK, I think I found it, and here's a handy list that I found on an ebay seller's auction that gives all of the equivalent parts... here's an auction for the sensor...

http://cgi.ebay.com/NISSAN-200SX-300ZX-MAXIMA-84-89-OXYGEN-SENSOR-NEW_W0QQitemZ8021480400QQcategoryZ33557QQssPageNam eZWD1VQQrdZ1QQcmdZViewItem

here's the list that they give of aftermarket part numbers:

AIRTEX 5S3800 aftermarket
AIRTEX 5S3801 aftermarket
AIRTEX 5S3821 aftermarket
AUTO-TUNE PT35042 aftermarket
BECK ARNLEY 156-3027 aftermarket
BIG A 54-5140 aftermarket
BORG WARNER OS584 aftermarket
BORG WARNER OS972 aftermarket
BOSCH 0258003276 aftermarket
BOSCH 13276 aftermarket
ECHLIN OS582 aftermarket
ECHLIN OS867 aftermarket
FILKO OS-278 aftermarket
FILKO OS-289 aftermarket
GP/SORENSEN 779-7271 aftermarket
GP/SORENSEN 779-7282 aftermarket
KEM 138-203 aftermarket
NAPA OS582 aftermarket
NGK 24145 aftermarket
NIEHOFF FE908 aftermarket
NISSAN 22690-01A00 OEM
NISSAN 22690-01P00 OEM
NISSAN 22690-09P01 OEM
NISSAN 22690-12P00 OEM
NISSAN 22690-12P01 OEM
NISSAN 22690-28F60 OEM
NISSAN 22690-V5202 OEM
NISSAN B2690-12P01 OEM
STANDARD / HYGRADE SG271 aftermarket
STANDARD / HYGRADE SG282 aftermarket
TOMCO 11110 aftermarket
WELLS SU4348 aftermarket
WELLS SU4500 aftermarket
WELLS SU4505 aftermarket

Someone correct me if I'm wrong, but it looks as though it doesn't matter whether or not it's turbo or non-turbo...

i got mines from fred...

i got mines from fred...

T Bags, whats the deal you picking up my U12 ecu or ?? Dr. Fowler is waiting to snatch it if you dont. Please let me know so we can make arrangments.

Thanks!

sold yet?

Sold

dammit..holla at me if u get another one

I went to the local autozone, and grabbed the O2 for a 89 300zx Turbo, which is skinny, and will require that I use my existing harness clip, for my U12 - I will know if this one works early this week :-)

I think its the right one.

y cant u just wire it directly?

the clip was different on the one I got. I pulled the wires out carefully with a small small screwdriver, so I could actually remove the terminals, then I did the same with my stock oxygen sensor, and put the wires from the 300zx sensor into the 93 NX2000 sensor in the same order with the same colors.

I was wrong, the sensor I had for comparison that had 2 white and 1 black was not like the one actually in use in my car. The one in my car had red white and black.

FYI the autozone Oxygen Sensor is a Bosch and cost me 69.99+tax which I thought was a pretty good deal.

So now I have a U12 Manual Transmission ECU, a 89 300zx Turbo Z31 O2 Sensor, and a stock 93 NX2000 MAF Adapter driving a Non-BB Avenir T25 internally wastegated at 6psi. BTW it is a SOKO JDM Sr20 for the engine.

This car is running a lot better than it was on the USDM ECU with an my e-manage.

A LOT better.

I hope this helps.

Hey I have a u12 ecu if needed. Its from an automatic though. Rev limiter comes in at 7250.

walrus, you took the wires out of the sensor, or just out of the connector clip? Do you have any pics of what it looks like/should wire up like? What wires on the stock harness line up to which on the O2 sensor? I'll be needing to do this soon, as my ECU is on the way!! woot!!

sounds like walrus took his time with this..nice explanation of ur set-up..how can u tell if the ecu is auto?

I took the TERMINALS out of the harness, and put them into my stock harness, they fit in perfectly, you have to jam a really small eyeglass screwdriver to set them free, each wire terminal is held in with a little plastic clip.

I hear O2 sensors don't like their wires cut and soldered/twisted together because they're sensitive to voltage drop.

no pics, but go get the autozone 89 300zx turbo Z31 oxygen sensor. it should be skinny compared to your USDM one, be made by bosch and have three wires of the same color with the same terminals on the end of them (as your USDM sensor) - the only difference is the connector, so just remove the terminals from the connector and put them in yours and you're good to go.

as far as the ECU goes, search for the part number on the ECU and you'll find a plethora of threads identifying your ECU.

good luck. I will try to help with any other questions.

OH BTW go to the nissan dealership and order the "exhast nut" (o2 bung) for the 89 300zx Z31 J-pipe. its like 3 bucks, and its what the skinny O2 sensor threads into, you'll need to use a freaking axle nut socket to remove the old one and install it, you'll see what I mean, otherwise your skinny o2 won't fit in the old slot.

this is all assuming you don't already have the correct o2 bung installed.


is this confusing? I hope you can make sense of this

ok. makes sense. Just one more question. Will the sensor not thread into my GTi-R manifold bung? Or are you referring to the collar nut that the O2 sensor thread into, and the "exhaust nut" then threads into the the welded on bung?

Thanks for the answers!

Hey Dr. Fowler, your PM box is full. I recieved your ecu yesterday, its chip'd and burned and ready to go out today (Friday). PM me your shippingg address, otherwise I'm just gonna use the one I used before.

The ECU is setup as follows:
U12 Base Map
U13 Timing Maps
Raised Rev Limiter to 7500
Removed Speed Limiter

If theres anything else you wanted done, let me know ASAP. I think that covers it ***.

Steven

pm'ed

Not to jack the thread, but are auto and manual rev limiter the same on the u12-u13???

hope not 7200 sucks