i have a b18c1 in my 91 civic and pr3 ecu, my problem is i have to much fuel so i think my problem is my 02 sensor. Anyone know where is the stock mounting for the o2 sensor, i think is one before the catalytic converter end one after. but mine is two before the catalytic converter.

thank you before

 

yes that it correct one before and one after please correct me if i'm wrong.
Don't want to make a new thread since were on the same topic.
I need to convert my 1 wire o2 sensor to 4 wire?
Yes i did search and came up with this still confused
O2 Sensor Input - WHT to D14 (needs to be a shielded wire)
Heater Control - BLK to A6
Sensor Ground - GRN to D22
Sensor Voltage - BLK to A25 or B1
I have a b17 motor running a p28!
Can someone tell me please how to do this step by step so i don't mess up, i don't have anyone to do this for me, also show a diagram thx.
Also do i splice to connect the wires please explain how i connect the wires.
Do i connect with the ecu pins a,d,c etc? thx

 

The OBD0 PR3 ecu requires two one wire O2 sensors. One masures cylinders 1 and 4 and the other measures 2 and 3. The sensors would be located in the primaries of the exhaust manifold. For an OBD1 P72 ecu the sensors would be located near the cat converter.

 

ok so my setup of the o2 sensor is okso ifprobably my fuel pressure is too high anybody know the right fuel pressure of this setup.