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ok im almost done the swap but the mechanic came to me and said we have a problem:
the problem is i kept the same body harness in the bay of my 01 civic and i have the motor in but when i put my exhause back up there needs to be 2 o2 sensors . is there a way i can wire a o2 sensor up or do i need to swap out the whole body harness..what do u guys think...i also have a k pro so does that eliminate anything to do with the o2 sensors

 
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Just say this, I am we todd did, I am we todd did, I am sofa king we todd did, and the problem will reveal itself.

 
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^ what the hell does that mean?

anyways, I dunno anything about k20 swaps, but they sell 02 extention cables here:

Honda/Acura: Caspers Electronics, Inc.

 
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your supposed to say it slowly and its I am Sofa King We Todd It, its a bad joke that that guy ruined.

 
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You're a jackass.

Good Find.

Way to not help the original poster.


Now that I got that out of the way.
I'm not sure I understand your question, You have a k20 in your engine bay, and your using an EX downpipe and exhaust? If your EX requires two o2 sensors, but the K20 only requires one, then you could just weld shut one of the holes on the exhaust. However I didn't think that you could use a stock formation exhaust system with a swap. I thought you either had to use the RSX downpipe welded to your aftermarket (or whatever) exhaust. You said that the harness wasn't fitting correctly? You have the Stock EX harness in your bay? If you are using a stock EX harness you have to either splice that harness with the EP3 harness or order a plug in. (I think Hasport makes one, not sure.)
Please clarify your problem.

 
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ok now my problem is probally something dumb and is answered in the DIY but im having a hard time grasping it...i have a lx, i kept that harness in hte bay, i swapped the k20 in it with a header and downpipe, now the civic harness only has 1 o2 sensor but the rsx has 2 o2 sensors..can i eliminate one of those sensors and just plug up the rsx motor with just one 02 sensor or do i need to use both hole and get another o2 sensor...the whole relay and 02 sensor part on the DIY is so confusing, it really doesnt goin in to that much detail(such as, how long should the wires be, where will the relay be at, etc.) plz help someone..the 02 sensor is the only thing holding up my swap, everything else is done..thx

 
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Haha! best post of this thread

 
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^^^thanks gearbox glad someone appreciates the joke heh.

 
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The lx should have two outputs on the engine wiring harness for o2 sensors...
The problem is, the pinouts for the kpro are probably in different places. You need the ecu pinouts for the kpro and compare them to the pinouts for the lx so that you can make sure you have the primary o2 sensor going into the primary location and the secondary into the secondary location.

 
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you made a joke, but did nothing to answer the guy's question. if you didn't know, you shouldn't have responded at all, or at least had the decency to say so. It is a very old joke indeed, but it was not wanted or needed.

Thanks andyman and eyger for trying to help the man with his swap problems. I'll be asking questions of my own soon enough. People around here want to much for a beater minitruck so i may just buy a used kit and boost...

 
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^^^because the guys question didn't deserve an answer. This topic has been covered at least 100 times and had he searched he would have found the answer. Also what the hell kinda mechanic gets 95% into a swap and then goes uhhhhh we have a problem, sounds like his mechanic is just as retarded as he is. A swap is not an easy job and had he done the proper research in the first place he wouldn't be in the predicament he is in now, sounds to me like he has a lot of money but not a lot of brains. Also I didn't exactly see an answer in your post either...

 
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for someone who lives in a hick as town in Az he needs to shut his mouth. I asked a simple question, i looked it up a found the answer but i didnt understand how to do it...my bad, im sorry i have a life and dont know everything in the world about hondas, my bad dick...for the people who answered without being a smart ***, i appreciate you guys helping me out

 
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no need for another one, two had already been given. i was just making an observation, which you then proved correct with your very next post.

 
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ok, in the DIY... if you read the section carefully about wiring up the o2 sensor. It explains where to connect each wire to the o2 sensor.

You must have an RSX-S Primary o2 sensor and connect the wires from the sensor to the wires from the c101 harness. By any means neccessary. Go out and buy a bunch of wire and start matching up what it says in xproductionz' DIY.

Clip 10 (black/white) -------------> Pin 4 (black) of the o2 sensor

Clip 19 (red) ------------------------> Pin 1 (white) of the o2 sensor

Clip 13 (red/yellow) --------------> Pin 2 (green) of the o2 sensor

Clip 15 (white) ---------------------> Pin 3 (black) of the o2 sensor

***12v relay-----> Pin 3 (black) of the o2 sensor

And the relay you wire up by following his next step

Pin 1 from the relay combines with Pin 15(white) of the C101 as stated earlier during the wiring of the C101 clip

Pin 2 goes to a constant 12+ volt source. (This is a source of power that is always on even when the key is off)

Pin 3 goes to connector E on the ecu which is the far right clip of the ecu. Let me explain. Look at Pin 8 on the connector E on the ecu. there should be an orange wire. Cut the wire and take the end of the wire that comes out from the ecu and connect this to the relay Pin 3. If there is no wire in the E connector Pin 8 then you need to find a pin to stick in there from another clip. If you did cut the orange wire. Just take the side that is coming from the harness and tape it off.

Pin 4 is not used

Pin 5 goes to a switched 12+ volt source. (This is a source that comes on when you turn the key. A good place for this is possibly the cigarette lighter if you cant find one.)


Just take your time and read through it a few times... you just need to do whatever it'll take to get those wires connected to each other... by splicing soldering, whatever.

This is all courtesy of xproductionz.