I'm gonna do my B16 swap soon and was wondering (since the wire harness was hacked on mine) which O2 sensor on the Exhaust Manifold is the primary and which is the secondary, I'm assuming the one closest to the timing belt is Primary, is this correct? thanx.

 

doubt anyone in here is going to know try eg civic

 

There should only be one O2 sensor.... Unless you have OBD2.

Anyone else agree?

 

what year car is the swap going into would help. if it`s a 88-91 it will be the one already there . it has a white or clear plug . the 2nd is a green plug

 

Do a search, there is plenty of info on it. All of these replies are wrong, though.
If the swap is OBD0 and going into a 88-91 Civic/CRX, you will be using the JDM PR3 or PW0 ecu. They look for 2 oxygen sensors. On your harness that goes to the ecu, C16 is the stock primary O2 sensor. You have to add a wire to pin C8 for the secondary O2 sensor.

And yes, you are correct about which O2 sensor is the primary one. It is the driver's side O2 sensor that is primary, and the passenger side is the secondary.

Good luck

 

LIKE I SAID! clear or white one is primary and the green plug is 2ndary . jeeeeeeeeez

 

He mean O2 sensor on the Exhaust Manifold , cycliner 1-4 primary white wire, 2-3 secondary.
The car feel faster when i had wired it incorrectly. strange??

 

Evo, thank you, That is all I was askin for. Obviously, the white one is primary, I knew that. but the manifold I got has the plugs cut off and I wasn't sure which one was which on the manifold. (and I did do a search smart *** RuffRhyno)


[Modified by SuperJay, 5:45 PM 3/19/2003]


[Modified by SuperJay, 6:05 PM 3/19/2003]