Question - Where is the 2nd 02 sensor harness plug at within a 98 GSR DC2? I am trying to unplug the 2nd o2 sensor which goes into the car - I tried pulling on the grommet and don't want to rip it? I am afraid I need to remove center console, seat etc. The sensor has welded itself in, I think. GRRRR!

Please help ASAP. I would like to go out in the morning and knock this project out!

Thanks much!

Story:
I started modding my daily driver tonight. Replacing stock exhaust system with Greddy Header - omni USDM test pipe and Apexi WS cat-back. My idea is drop the whole thing as 1 piece and throw the new stuff on.

So, far I have split manifold into 2, removed top piece off, removed intake off, unplugged 1st 02 sensor. I need to unplug 2nd one and drop the whole system down and try to take the 02 sensors off when the exhaust is on the ground. Hence I need to unplug 2nd sensor.

Also, doing AEM CAI and fidanza short shifter with razo ****. Nothing too crazy. Its my daily driver, like I said

 

You should be able to remove the grommet, and you'll find the plug a bit further up.

 

Thanks, I will do that for sure first thing in the morning. Hope there is enough slack in the wire!

 

yea the plug is behind the grommet

 

Becareful when droping the exhaust system. I know from working on 6 different 94-96 tegs. If you don't support the exhaust, it may pull out the wires and you make have to repin the o2 sensors. Good luck

 

Yep, thats why I am super nervous. I have unplugged 1st one from harness easily. I want to get the 2nd one off before trying to even undo the hangars. I will post some pics soon!

Thanks all!

 

use a small short phillips srewdriver

 

I have a suggestion for the removal of the sensor. I've dealt with this alot. Honda O2 sensors get "welded" in so bad. LOL.

anyway, I just did some work on my '98 GSR, and the trick is to have the exhaust be a little hot still. The metal is expanded that way, on your cat.

There is a specific tool for removing O2 sensors, the one I use is a MAC removal tool. If you don't have one, most parts stores (autozone, napa, schuks, etc. ) will rent it to you, or even let you use with a refundable deposit.

Anyway, that tool, will get it out no problem.


This is off topic, but I wanted to post it up anyway for you. The reason I had to remove my O2 sensor was because I was throwing a code 67 which is cat inefficiency. I did the little spark plug non-fouler trick, and it worked awesome. If you're putting on a test pipe, or changing anything, I'd suggest to do the non-fouler trick at the same time. It will save you time down the road. Because without a chipped ECU, your car WILL throw the 67 code with a test pipe. So, if you have to rent the tool, at least this way you only have to rent it once.

 

Thanks everyone for the advice. I just finished the install a while back and went for a drive. The car just feels so much less constipated than it did with the stock stuff.

civic92 - Yes, I supported the full system with hangers.

I was able to remove the grommet and pull down the plug for the 02 sensor. I unplugged it and then dropped the full system.

pvt_awol - Yes, thats exactly what I did. I rented the 02 sensor removal set from autozone and took of the sensors with it. They come out without a hitch. I may do the OBD1 with chipped ECU and skank2 manifold someday, not anytime soon.

I had a second bung welded in my USDM omni testpipe in the same location of the 2nd sensor. I used one anti-fouler drilled out and mounted the rear 02 sensor to the pipe. I had one finger clearance with the underbody and the wires are making a sharp 90 but not pinched or stuck in any way and have some good play. I used the tool to install the sensors as well and used some anti sieze for good measure.

Other notable mentions:

1) The fidanza dual bend install went without a hitch and man do I love the shorter throw. Very impressive shifter for $25 shipped, new in box (ebay, baby)

2) Greddy header is a quality product and install went smooth from underneath. Bolted up snug and is now a golden color after some interstate runs.

3) AEM CAI install was also easy, but I complicated things by replacing the coolant lines that ran from the t-stat housing to the throttle body. This let air into the system and the rad cap had some leakage during my first test drive. I had to limp it home and "burp" the system using the steps posted in the archives. I was able to get the cooling system working successfully

4) Apexi WS2 - I am so glad I got this exhaust. Sounds great and even without the cat, no raspiness. It has gotten a little louder after a few drives and expect it to get a little bit more in the days to come, but I am glad. I may do a spoon N1 axle-back for HPDE days this year!

Thanks again, everyone! I am enjoying the ride much more today