i have a o2 sensor concern and a rich running condition. does anyone know where i can get a jdm civic sir honda wiring diagram? i have something similar from hasport.com and honda swap.com. but i really want an honda oem style diagram. thankyou in advance... i am running a pr3 processor on a b18c(1999).

 

truthfully the hasport one is pretty clear. the oem one in the manual is not as easy as those other ones you have to read.

 

are you using the sir manifold with the duel o2 sensors or a gsr one with one near the cat? if you are using the gsr one the non heated o2 sensor doesnt get hot enough back there it needs to be close to the motor to give an accurate reading, if you are using the manifold with them up front the green plug goes to the stock o2 sensor connector and the other wire directly to the ecu(i did this on my si-sir swap)

 

hope this helps..

 

so do u do with the orange,white and blue wires

 

http://www.hondata.com/techwiringpw0.html

 

i have the hasport header with two 02 sensors.

 

thankyou for all replies. my ecu is virgin. i connected a lab scope and the ecu is sending the 5 millivolt reference voltage to both 02 sensors. both 02 sensors respond to being driven rich and lean . but cylinders 2 and 4 continue to run extremely rich.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by teamols &raquo;</TD></TR><TR><TD CLASS="quote">thankyou for all replies. my ecu is virgin. i connected a lab scope and the ecu is sending the 5 millivolt reference voltage to both 02 sensors. both 02 sensors respond to being driven rich and lean . but cylinders 2 and 4 continue to run extremely rich.</TD></TR></TABLE>

How do you know it is only 2 and 4?

 

plug are fuel fouled and blackened with carbon. other two are perfect. plugs foul in one day

 

i wonder if i'm missing a ground thats why i was looking for a oem diagram

 

more pics for ya.

 

sounds like maybe your o2's are installed inthe wrong cyl.

swap injectors from 2 and 4 into 1 and 3 as well. see if the fouling changes w/ injectors.