I swapped a JDM SOHC D15B into a 92 Civic CX. I used an EX engine harness with a P28 ECU. Do I have to add or swap any wires for my 4 wire O2 to work correctly now since it was previously 1 wire (or whatever).

Thanks

 

bump

 

you need to run 3 wires for the O2 sensor, easiest way is to just go to a junkyard and buy a '94 - '95 DX/LX engine harness. Do not get a '92 - '93 harness, you will not have a plug for the map sensor if you do.

 

I am already using an EX engine harness. Does anything need to be run from the shock tower plugs to the ECU?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by T-RO &raquo;</TD></TR><TR><TD CLASS="quote">I am already using an EX engine harness. Does anything need to be run from the shock tower plugs to the ECU?</TD></TR></TABLE>

Sorry, i didn't notice you said you used an EX harness, no wires need to be run, they are already run from the ECU to the shocktower plug.

 

Cool thanks... trying to troubleshoot a poor running car.

 

Did you add the purge solenoid on the back of the intake? Is it timed right? dented oil pan?