i was doing a read up on o2 and accidentally hit up and part that says OBD2 has 2-o2 sensors...

my quesiton is...my hybrid engine bay is 97 gsr but i got only one o2 sensor, and i know that gsr97 swap usually come with obd2, but like i said ealieri got only 1 o2 sensor at the header's collector...is this mean i have a good chance of running OBD1?

thankx guys

 

by the way, my hydrid detail is 97gsr in civic 95ex coupe....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yeegsr &raquo;</TD></TR><TR><TD CLASS="quote">i was doing a read up on o2 and accidentally hit up and part that says OBD2 has 2-o2 sensors...

my quesiton is...my hybrid engine bay is 97 gsr but i got only one o2 sensor, and i know that gsr97 swap usually come with obd2, but like i said ealieri got only 1 o2 sensor at the header's collector...is this mean i have a good chance of running OBD1?

thankx guys</TD></TR></TABLE>

What do you mean, "I have a good chance of running OBD2"? If you're using an OBD2 ECU with the swap, it will be looking for a secondary O2 sensor. Since your car was originally OBD1, it wouldn't have a secondary O2 unless someone wired one up during the swap.

 

The secondary o2 sensor on obd2 integras are at the cat. So the wiring is from the cabin. That is why the headers has on there as well.
The ecu reads o2 reading from before the cat and after the cat in obd2.

If you are going to run obd2 you will have to wire in the 2nd o2 sensor.

I heard somewhere that the 97 integras don't look for the second o2. I'm not sure i just heard it.

 

2

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Padawan &raquo;</TD></TR><TR><TD CLASS="quote">
What do you mean, "I have a good chance of running OBD2"? If you're using an OBD2 ECU with the swap, it will be looking for a secondary O2 sensor. Since your car was originally OBD1, it wouldn't have a secondary O2 unless someone wired one up during the swap. </TD></TR></TABLE>

well, since i dont know if im running OBD2 or OBD1 or which OBD# ecu i have, but by the know of using only one O2 sensor

what is the chance of my car is currently running OBD1......can OBD2 control only 1 o2 sensor or it is impossible for OBD2 to runs only 1 o2...

 

Take out the ECU and look at it. Then you will be able to tell if it's OBD 1 or 2.
94-95 for the Integra was OBD 1 96-99 was OBD2 00-01 is OBD2a.

 

what exactly what im looking for on the ECU...the year? or what

 

just look at the wiring harness on it obd1 and obd2 they are different and you can just look at the number on your ecu

 

Has two o2 sensors like every has said...and its one on the header, and one after the cat...the obd-2 is constantly making fuel adjustments on the fly, as most ecu's do...but it does it by reading the primary o2 sensor (on the header) and then the seconday o2 sensor (on the cat) and figures out from the readings wether or not to add/subtract air or fuel...