ixoiiiiviviiivi

I Dropped a B16A2 (99 Si) Motor Into a 1999 Civic Dx Coupe. As you may know they are both OBD2 Systems so they contain 2 Oxygen Sensors. In the DX, both oxygen sensors plugged right into the Main engine harness because the catylitic converter is one with the exhaust manifold (header). In the 99 Si, the second O2 Sensor Plugs into the Main Dashboard Harness because the catylitic converter is located right under the shift linkage.

My Question is: Is there a Jumper or socket to plug the O2 sensor into in the DX Main Dash harness as there is in the 99 Si? Do all 99 Civics Use the same dashboard wiring harness? Is there another possible way to make this work with out having to repin the Dash ECU jumper or change the entire Dash harness? Please help with any information that you have. Any info will be found very useful. Thanks.

freeflyinrider

passwordJDM makes an extender for the o2 sensor so that you can put it under the car instead of up frnt,check it out

Speed_1

you can just add the wires to the dash harness and repin the green plug how its suppost to be.

ixoiiiiviviiivi

So does the 99 Civic Dx Dash wiring have the O2 Plug prepinned? I counted the number of pins from my 99 Si Dash harness and the 99 Dx Harness and they have the same amount of pins, but i can find the plug anywhere? i really do not want to open up the whole harness to trace it so if anyone knows please help. Thanks.

ixoiiiiviviiivi

The thing is that the 99 Si Engine Harness only has one O2 Sensor Plug. There is no second. Where can i plug the second? I cannot find the plug in the dash harness.

Thanks

honisoto

Bump because i need this help also...same case senerio except im doing it for a d16y8 in 98 civic dx..