Wide band O2 sensors

Question

Wide band O2 sensors

superX (Electrical)

(OP)

14 Jun 03 15:50

I am trying to find a wide band O2 sensor to build the DIY-WB project. How does one identify a wide band O2 sensor? Are there different ones other than the NTK 5-wire O2 sensor identified for the DIY-WB project? I've been to several auto parts stores and no one carries the NTK. They have several that supposedly cross to a 95 honda civic vtec. Bosch 13246($190 not in stock), Bosch universal 15734($70) which is 4 wire but looks like it has an external O2 inlet... what's this all about? Are all 5 wire sensors wide band?
http://www.diy-wb.com/02info.htm

Thanks,
Tim

jons999 (Automotive) · Answer 1 · 2003-06-15 10:03:52

You might want to try giving some of the Dyno companies a call, Dynojet uses wideband sensors on there dynos, i imagine that they would have replacement ones they sell or could at least point to to a vendor. I think they usually run a couple hundred bucks or more so that $70 bosch probably isnt right.

gatespe (Automotive) · Answer 2 · 2003-07-07 12:58:52

I have been looking for one of these sensors as well. I have found some through the dyno suppliers but they are asking around $600 for them. I found this info today on the web. It has Honda and NAPA part numbers and looks like it may be helpfull.

http://www.techedge.com.au/vehicle/wbo2/wbntk.htm

Greg

Surefire (Electrical) · Answer 3 · 2003-07-07 18:17:11

I have been using UEGO sensors for a few years now in both engine controls and instrumentation.
For engine controls we obtain our sensors directly from NTK.  I am not sure if the sensors we have are the same as the ones used in your projects.  The connector is different but looks the same otherwise.  They must be similar as both are 5 wire NTK UEGO sensors.  NTK does have different models with different calibration resistors.  Different connectors are found on otherwise similar units.

For instrumentation we use the Horiba “Lambda Checker LD-700”.  At about US$1500 (sensor included)  it is accurate and reliable and saves the effort of having to make it yourself.  The unit operates on 12V source and supplies 0 to 5 volts output = Lambda.  See www.emd.horiba.com/engmeas/ld700/  for info.

A company called ECM in California supplies a similar product.  They are extremely familiar with the NTK UEGO sensors but don’t seem so keen to assist do-it-yourselfers.

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Wide band O2 sensors