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Old 05-25-2011, 08:13 PM   #1 (permalink)
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5 wire O2 sensor into 4 wire harness???

Finally got the correct exhaust manifold and P07 ECU hooked up into my '95 Civic CX with a VTEC-E engine swap, EGR valve fouls the fuel rail so I have to swap it for another. How do I hook up that extra wire from the wide band O2 sensor?, and where do I find the wire? This has probably been covered before, if so just point me to the thread.
It's taken me a year to get all the peripherals hooked up to my VTEC-E, and I can't wait go hypermilling for real!

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Old 05-27-2011, 10:12 PM   #2 (permalink)
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Blatant Bump, Trolling for Truth.
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Old 05-28-2011, 12:23 AM   #3 (permalink)
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you will not like it

EGR valve fouls the fuel rail so I have to swap it for another.

How do I hook up that extra wire from the wide band O2 sensor?,


the EGR valve does not and can not "fouls the fuel rail "
so kindly add great detail to what it is that you are attempting to state .

and

you will need to use a 4 wire 02 sensor that was designed for your system , your ECM and harness can NOT be retrofitted to use

an AFR sensor .

5 wire sensors are NOT 02 sensors they are Air Fuel Ratio Sensors , they do not and can not interchange
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Old 05-28-2011, 09:16 AM   #4 (permalink)
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As per "fouling the fuel rail" that comes from the mechanic who installed the exhaust manifold and P07 ECU, I'll have to check it myself.

I thought all models of the 92-95 Civics had identical wiring harnesses, therefore the wiring for the VX 5 wire sensor.
I'm sure I can rig up the VTEC-E to run in my CX, "your ECM and harness can NOT be retrofitted to use an AFR sensor"- I really don't want to believe that, I've got the right ECM and as I said I was told that all 92-95 wiring harnesses are the same, just different wires used for different models.
Thanks for your response and I hope you're wrong.
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Old 11-18-2012, 09:14 AM   #5 (permalink)
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Actually you can wire it in yourself. You just need to find a spare harness to pull the ecu harness wires from. To OP you might want to look into the original honda helms manual to get ecu pinouts

Edit: excuse my ignorance for bumping an old thread, early morning got me.

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