My o2 sensor is seized into my header. not a problem because i went turbo so im not longer using it. so i cut the wires off of the old sensor so i have the plug. I bought a new sensor but the wires are different. so i need help wiring this up.
well i guess it wont let me post the plug but its the 4 wire with 2 black,one white and a green…please help me car is running so rich without it
I bought Denso O2 Sensor for my new DC Header. The part number is 234-4099 for 92 GS-R. I count the pin from left to right and from top to bottom so pin1 location is left and top and pin 4 is located on right and bottom.
Pin 1 - black wire
Pin 2 - black wire
Pin 3 - white wire
Pin 4 - blue wire
I hope this helps. 
my sensor has one black, one gray and two white wires. any help there? since there is 2 black wires in the plug and two white wires on the sensor im guessing they go together. that leaves a black wire and gray wire on the sensor and green and white on the plug to connect
sorry, meant to start new thread…