I have a 97 civic HX i need a new oxygen sensor before the cat, the original sensor has 7 wires comming out of it, OEM o2 sensors cheapiest i kind find are 400$, anyone know if you can hook up a generic 4 wire sensor? and if so i would like to see if anyone knows what each wire on the oem sensor is used for.

 

Have you checked junkyards?

eBay?

 

ebays got nothing, dont know if i would want to buy a used oxygen sensor

 

http://www.densoproducts.com/r...yID=2

OE quality, put two of these in mine, and no problems. Gas mileage went back to normal as well.

 

dosen't the HX have a wideband 02 sensor, I think so, those are no where as cheap as a regular 4 wire heated 02 sensor