1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

4 wire o2 sensor

Discussion in 'ECU's, Electronics, and Tuning' started by pork1463, Sep 25, 2003.

  1. pork1463

    pork1463 Junior Member

    Messages:
    14
    Likes Received:
    0
    Joined:
    Jul 20, 2003
    Location:
    elgin, IL
    Ihave a 92 cx hatch. I just put in a b16a2 and my old harness worked for everything but the v tech and the o2 sensor. I got the v tech working but i can't figure out how to wire the o2 sensor...My old o2 used one wire now this one has 4..Can anyone help? thanks
    Mel :blink:
     
  2. Bl6CRX

    Bl6CRX Senior Member

    Messages:
    1,553
    Likes Received:
    0
    Joined:
    Jul 14, 2003
    Location:
    UCLA
    hmmm, not to sure about that one, cause since your car is a 92, it should be obd1 which has a 4 wire 02 sensor, i would expect that out of an obd0 car (91 or before) because they have one wire 02 sensors...don't worry though cause your harness can be converted to use the 4 wire because mine is so i can run obd1
     
  3. radnulb

    radnulb Senior Member

    Messages:
    674
    Likes Received:
    1
    Joined:
    Sep 23, 2003
    Location:
    Sinsinnaty, Ohio
    CX came with one wire O2 sensor.
    You need to run a couple additional wires.

    4wires on O2:
    White=
    Black=
    Black=
    Blue=

    You need to run A6 on the ECU (O2 Heater) to one of the black wires.

    The other black wire needs to get tapped into a switched 12V signal somewhere in your harness. do NOT wire it directly to the battery - tap another signal that gets turned on with the key. Most black/yellow wires on the engine harness are +12v switched.

    The blue wire needs to be run to ground.

    The white wire needs to be run to the original CX O2 sensor wire.

    That was from memory, so I might be dyslexic on the colors. Someone else should verify before you go cutting and splicing.
     
  4. pork1463

    pork1463 Junior Member

    Messages:
    14
    Likes Received:
    0
    Joined:
    Jul 20, 2003
    Location:
    elgin, IL
    Thanks I'm going to go look at it. I'll get back. :worthy:
     
  5. rudeludenotmeanthough

    rudeludenotmeanthough Senior Member

    Messages:
    1,406
    Likes Received:
    0
    Joined:
    Sep 29, 2002

    when the key is in the ON position not the acc.
     
Verification:
Draft saved Draft deleted

Share This Page