My friend just aquired a wideband 02 sensor, and wants me to wire it in. But there are some probems/issues that I would like to address.

First, I dont have the wiring diagram for it, but I am guessing all 3-wire 02 sensors are standard. Here are the pin numbers:

"C" "B" "A"

Anyone know what the pinout is?

Second, does the wideband put out a signal that is useable for our ECUs?

Thanks in advance for your help!

Jarrett

 

I am pretty sure that our stock ECU only reads narrow band. Although some sensors have narrow band at the same time they have wide band so you can hook some up to the ECU but not all will have this feature.

Santiago

PS- I don't know the pinout

 

Any markings on it as to what model? Most of the time they've got a bit more than 3 wire, are you sure it's not just a heated o2 sensor?

 

Shoot rat, it might be. I dont know, I am not very well versed in 02 sensors...

I am trying to get the specs right now.

 

Yeah I am with sonic the DIY kit sold in aussi land has a sensor with a bunch of wires lol not just three. :-/

 

My friend said that it came with the Jet Wideband AF monitor kit. Somehow he managed to scam an extra sensor.

Hmmmm... Well shoot man. Looks like lots or 02 sensor research is in my future.

 

Wait your only gonna hook up the sensor? or the kit? If its a wideband and you just plug it in the ECU will just looke at it and freak lol!

ECU sees WB o2 says=

 

No no no.... There is already an AFM in the car, but a wideband sensor presents more accurate readings. He wants to install this one, so he gets better readings. Plus it was free...

I figured the wideband signal would not be compatible with the ECU, but there may be a narrow band signal too.

I am kind of running under the assumption that all wideband 02 sensors have similar pin-outs so I can wire this. Starting to look like I was wrong. As previously stated, my knowledge of 02 sensors is fairly limited at this point.

Jarrett

 

Okay, now ive got the pinout. One is for power, one is for ground, and one is for signal. So, its either a true wideband (which I am starting to doubt), or its a heated 02 sensor.

Jarrett

 

Ok so you want to hook it up to the guage right? What we have to find out is what the guage needs to read or is able to read wide or narrow. Also if you use the narrow band feature I don't think it will be any better than the stock sensor since I beleive narrow band is a stadard scale or measurement but I could be wrong.

Why not call the vendor of the guage and ask if it can read a wide band signal without getting the V reading from the ECU? Also contact the manufacturer of the WB kit and ask for the pin out if you don't have it in the documentation for the kit.

Santiago

 

It's a heated o2 sensor, that is all it is.

 

OK did lots of reading, it is not a wide band.
It is heated (still beter then stock)
Now for some usefull info pertaining to the subject:

-It was used in 92-95 lean burn 1.5 Vtec Honda Civic's. The Honda part number is #36531-P07-003.

-The sensor has a M18x1.5 mm thread, so you will have to provide such a bung on your exhaust. use an M18 nut and weld it up before the catalytic converter.

-Also note that the sensor has a special connector which carries the calibration resistance, which's value could change from sensor to sensor. The counter part female connector is made by Sumitomo and you can get it either from TechEdge or from a junkyard. It was used in the headligh harness, near to the brake master cylinder, near to the firewall on the passenger side fender and on 90's Accord on the distributor. You have also the option to pick out the resistance from the sensor's male connector and put it onto the controller. This way you can use any five wires connector which you like.

I hope this helps people looking for cheap Wide Band O2 sensors. Most of the kits I've seen you still need to buy it, the Honda one is about $300 cheaper!

Maybee one day I will atempt this my self

 

wide band is 5 wires. and can't be hooked to the ecu. you need both wide band and stock o2's in the car. stock to stock ecu. and wide band to wide band controller.

the only advanage of the heated. is when hooked to a normal a/f gauge. the gauge will start working sooner as the 02 needs to get hot before working. now if you need an A/F gauge to work in the first 2 mins of cold driving then you're not smart