is it on the cat? or the header? i need to know cause my 02 sensor on the CAT is fuked and im thinking of just changing it to OBD1 instead of replacing the 02 sensor.

 

94-95 OBD1 GSR's have ONE 02 sensor located on the cat.

 

header

 

It's on the cat.

 

Not on 3rd gen's.

 

on my LS it is.....

 

How is it on the cat? isn't that obd2? isn't that the reason why people with high flow cats/test pipes have the problem with throwing a CEL?

-Rod

 

so is it on the header or the CAT? basically i want to know if i change my computer to obd1 from obd2, which 02 sensor do i need to keep? cause my 02 sensor on the CAT is jacked up.


[Modified by DC2_Integra, 8:52 PM 3/18/2003]

 

The only o2 sensor I have is on the header, BEFORE the cat. I don't have an o2 for the cat. obd1 gsr motor

 

thanks, answer i was looking for honda-tech rocks!

 

Alright, ill give you fact. We seem to go over this every other day

OBD1 GSR - ONE 02 sensor on cat
OBD1 LS/RS/GS - 1 02 sensor on header
OBD2 GSR - 2 02 sensors on CAT
OBD2 00-01GSR - 2 02 sensors, one on header, one on cat
OBD2 LS/GS/RS/ITR - 2 02 sensors, one on header, one on cat

 

Dont take that advice, its wrong. Im telling you...OBD1 GSR = ONE 02 SENSOR ON THE CAT, NONE ON THE HEADER.

 

where on the cat is the OBD1 02 sensor located? towards the b pipe or towards the header?

 

Towards the header.

 

ur the best. thanks!

 

k, one last question NewGSRDriver. if i change to OBD1 and keep one of the 02 sensors unplugged (the one closer to the b-pipe) will the CEL come on? thanks.

 

so would running a straight pipe cause a CEL on a obd1 gsr?

 

on my 95 ls its on the header..

 

Im not 100% sure from experience, but I would imagine if you change to OBD1, you could just plug the secondary 02 bung on the cat and use the primary 02 sensor, and it should work fine.

As for the test pipe, Im not sure...I like the environment Im not too sure...since theres no problem with swapping the 02 sensor to the header which obviously has no cat material, I dont see the difference with the test pipe. I know OBD2 guys have traditionally used a piece of cat material to fool the sensor.

 

On my 94 JDM integra Si-VTEC there is a sensor on the collector/header and also one on the cat, although i've been told i can ditch the sensor on the cat without throwing a code...dunno if this is true though.

Edit: On my cluster i have a warning light for the cat temperature its the little rectangualr shaped thing with the squiggles rising from it, so its possible that the sensor in the cat is a temperature sensor and the O2 sensor is the one in the header???

 

guess what? i unplugged the 2ndary O2 sensor on the CAR, and no CEL. drove around all day and no CEL. ???