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wire harness hack job

 
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Old 03-22-2011, 08:47 PM
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wire harness hack job

so this morning i take my car to have a engine diagnostic run on it to see as to why the emissions are so bad and the guy comes back to me and says that my wiring harness has been hack up from when they did the engine swap. mainly the O2 sensor harness but thats the most important part. so not only will it not pass emissions but now i need to have a lot of work done to get the car to run how its suppose to. oh well, time to get an emissions waiver and try to save up to have it fixed right so i dont have to sell it.
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Old 03-22-2011, 10:47 PM
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Re: wire harness hack job

What trim is the car; S, Si, Si-Vtec? What motor was swapped into the car? Was the wiring harness swapped, or is the harness on the motor now from the old original motor and rigged to work on the swap?

Details, my friend. Details.
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Old 03-22-2011, 11:00 PM
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Re: wire harness hack job

its a Si with a f22 motor. and and its the SI harness. literally the only thing they changed was the motor. had i known that when i bought it i would've gotten all that fixed while i was still in school and had a shop where i could work in and get a discount on all the marts i needed. god i miss having a dicounted store right on campus and getting an extra 10% of the already dicounted prices
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Old 03-22-2011, 11:15 PM
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Re: wire harness hack job

What exactly was done to the wiring harness? Is the O2 sensor rigged, not there at all, there and not working? Are you sure IT is causing failed smog? Post up your numbers. It is true you need to correct the wiring harness, but it may not be what is causing the car to fail if its purely emissions that are high and not a visual or something.
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Old 03-23-2011, 11:04 AM
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Re: wire harness hack job

well the oxygen sensor is there but its burnt out/no longer works. so that has to be replaced. and the wire harness has been cut and spliced improperly so much even if the sensor was working it wouldn't be able to send the signal back or even get the voltage it needs due to the resistance.
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Old 03-23-2011, 04:52 PM
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Re: wire harness hack job

Can you tell why so much splicing was done? I just looked on ebay and saw a couple Si harnesses for less than $100. I couldnt find any f22 harnesses on there, but id be willing to bet you can find one at a wrecking yard.

Does anyone know if any of the accord f22 harnesses would work on a lude?
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Old 03-23-2011, 05:08 PM
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Re: wire harness hack job

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Originally Posted by LudimusPrime View Post
Does anyone know if any of the accord f22 harnesses would work on a lude?
Should if you get a CB Accord EX harness. The CD chassis would probably work as well, so long as you don't grab a 96-97 OBD-II hardness.

As far as splicing goes, any half decent splice job will add only negligible amounts of resistance to the system.

Also, an Si with an F22? That's not normal is it? You sure it isn't just an S?
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Old 03-24-2011, 02:33 AM
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Re: wire harness hack job

yea i'm sure its not an S. in 92 there were BA9 and BB2. i have a BB2 which was the Si. also the body code on the door says Si so there was a motor swap done and thats my best bet as to why they did so much hacking to the wire harness.
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Old 03-24-2011, 09:10 AM
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Re: wire harness hack job

That makes sense.
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Old 03-27-2011, 10:09 AM
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Re: wire harness hack job

On your wiring issue, I just went through the same thing. Spliced up harness to the O2. Took me awhile to figure it out but heres what I did.

Get an O2 sensor for your model, make sure its got the female adaptor on it already.
Stop at a junkyard that has the same year Prelude and tell them youre looking for interior parts and grab some cheap little thing while youre there like a bezel or something, but really get the harness male adaptor for the O2 sensor. It'll come in handy.
When you wire it up check the wires on the new O2 sensor and match them up so that green goes to green and white goes to white. The other two wires are for the heater, which shouldnt make a difference how they're wired since its just resistance heater.The Helms manual comes in handy sometimes, but the wiring diagram for fixing this issue just doesnt cut it.
Thats what I did and no more CEL. Well, there is still a CEL but thats because the head gaskets blown and I've gotta work on that on my next day off.
Good luck!
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