I noticed this harness when I was underneath the car trying to install the shift linkage:

From underneath the car. The white thing in the bottom left is the oil filter:



Here's a clear shot and I'm showing how long this harness is. Not very long at all. I am thinking it's probably not used on the Eg:



Close up of the harness. This picture is from underneath the car. The large black area is the rear engine mount:



Here's a view looking from the passengers side of the car. The red capped at the top toward the left is where the intake goes into the manifold. Notice how I had to use the pliers to pull it up for the picture. Really short. Any idea what harness this is?



Thanks!

Car: 93 Civic Cx
Motor: 98 GSR


[Modified by Hybrid93Hatch, 1:05 PM 4/1/2003]

 

You connect your oxygen sensor???? Really that should only be the only 4 pin connector down there... Latez

 

O2 sensor.

 

I don't know man! That is why I asked what it is and where it goes. Also, at the end I asked if I need it.

Are you drunk?

PS <> So, it's the 02 sensor, but do I use it?

 

that looks like the 02 connector, and yes you should use it

 

Ok, thanks!

Is this thing a direct plug in? If so, I must just be over-looking the connector underneath the manifold. There is only about 3-4 inches of wire for that 02 so the connection should be close by. Unless I have to extend the damn thing Thanks for any help!

 

Chill dude, i figured if you put your motor in you would sorta know if you connected your oxygen sensor... Oh well, Good Luck

 

Sorry, you took that the wrong way. I'm not pi$$ed or gettng smart with you. This is my first swap and I really do NOT know what the hell I am doing. If it weren't for you guys I would of had to pay someone to do it for me. I didn't even know that was the 02 which shows how much I know about this stuff. But, now I do and I just need to figure out where it goes. I've learned sooooooooooo much about the GSR and Cx motor throughout the process

 

It is an O2 sensor, but it's the 2nd O2 sensor (the one that goes into your cat on OBD-2 setups). Since you're putting this into your EG, and I'm assuming that you're using an OBD-1 P72 ECU along with the OBD-2 GSR wiring harness, then no you don't need to use it. There's going to be a couple of plugs that you're not going to know where they go since the OBD-1 computer doesn't look for them (ie. crank angle sensor).

 

Got it! I have been told to plug the 2nd 02 in the cat. since I am using OBD1 P72 ECU Thanks!