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3 wire o2 sensor help
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sdom001 Offline
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Post: #1
3 wire o2 sensor help
Hello,
I'm trying to get everything prepared and figured out before buying an EFIE. I have an 88 Bronco with 1 o2 sensor. It has 3 wires. 1 black 2 white. Can anyone help me Identify which wire it is that I need to tap into or tell me how to test for it to find out which one it is.

I'd like to thank everyone in advance.
10-26-2008 11:56 AM
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colchiro Offline
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Post: #2
RE: 3 wire o2 sensor help
You can email Bruce and ask him for a diagram: http://www.fuel-saver.org/showthread.php?tid=2065

... or you can review the "EFIE Installation Instructions" in my Documents link for info regarding your o2.

Rick

Links: Documents / Tuning for Mileage | Toyota Sensors | Autoshop Sensor Tutorials
10-26-2008 11:59 AM
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sdom001 Offline
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RE: 3 wire o2 sensor help
I found my chilton's manual. For anuone else who wants to know the dark green/purple wire after the o2 sensor connector is the signal wire.
10-31-2008 08:09 AM
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