secondary 02 problem

[arodg25]

i just bought a jdm crx sir, and the b16a has 2 02 sensors for some stupid reason. is there a way to only use one 02 sensor? i have the pw0 ecu. thanks.

[FrodoGT]

The PW-0 has 2 O2 sensors as well, use 2. Otherwise, you could split the signal from one of them into both pins, but its not advisable.

[hondacivic99sivtec]

stick with two sensors. splitting the signal can not be good.

[arodg25]

ya i think i'll stick with 2 sensors then. by any chance does anyone know what cylinder's the o2 sensors should be conected too? there is one with a white round plug and the other with a green not so round plug. like 2 plugs in this picture (http://www.hybridgarage.com/tech/b16/2_7_15.jpg ). I just bought the car and it came with a header so i have a feeling that someone might not have payed attention to the location of the sensors and got them mixed up. thanks.

[FrodoGT]

Shouldnt matter, the sensors will read either way.

[crx2034]

My jdm crx also has 2 o2 sensors with a spoon chipped pw0 ecu. The o2 sensors really look like they were added aftermarket style, meaning i assumed they were put on by the guy in california that it came from to get it US legal.

[hondacivic99sivtec]

number 1 o2 sensor is 1&4 and #2 o2 sensor is 2&3. it should be pi c8 and pin c16 i believe

[arodg25]

ok but which plug goes to the 1&4 cyl? green or white. im not tracing my wires back to the ecu to find out.

[hondacivic99sivtec]

Originally Posted by arodg25

ok but which plug goes to the 1&4 cyl? green or white. im not tracing my wires back to the ecu to find out.

don't quote me on this but i believe that the green goes on 1&4 and white goes on 2&3, but some one feel free to correct me if i'm wrong. and it doesn't matter bacause they are both 1 wire o2 sensors and they might just be two different brands.