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MATT87GT
03-16-2005, 07:58 PM
I did a search and couldn't find what i needed so......


91 civic hb with 92 b18a1 swap. I just got it running today YAY. So i went to oriely and got a four wire o2 sensor for it since i am running obd1.

I need to know how to wire up the four wire o2 sensor , the dx harness used a 1 wire o2 sensor, so if anyone can tell me how or knows a link to a good write up i would greatly appreciate it.
NITROUS*ADDICT
03-16-2005, 08:04 PM
what computer r u running
MATT87GT
03-16-2005, 08:05 PM
Also i got the bosch o2 sensor and it has

1 black wire
1 gray wire
2 white wires
MATT87GT
03-16-2005, 08:09 PM
pr4 ls ecu it is the obd1 ecu
MATT87GT
03-16-2005, 08:22 PM
ok i just figured out the bosch diagram

1 black wire----signal wire

2 white wires-----heater wires

1 gray wire-----ground wire


So can someone tell me where to conect these wires.
blu
03-16-2005, 09:57 PM
ok i just figured out the bosch diagram

1 black wire----signal wire

2 white wires-----heater wires

1 gray wire-----ground wire


So can someone tell me where to conect these wires.
on your car....
cypher
03-16-2005, 09:59 PM
a-6 heater
d-14 o2
MATT87GT
03-16-2005, 10:07 PM
a-6 heater
d-14 o2
Is this for the obd0 side or for the obd1 side of the jumper harness ?

And what about the ground wire, does it just go to a chassis ground or does it need to go to an ecu ground?