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Guest Message by DevFuse
 

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air fuel ratio signal wire on 1996 legacy


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6 replies to this topic

#1 soobie_newbie67

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Posted 31 March 2013 - 12:01 PM

which of the 3 wires is it? I'm installing a a/f ratio gauge.

#2 987687

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Posted 31 March 2013 - 12:26 PM

You really need a wide band o2 sensor for an a/f gauge, the stock one won't give a very useful reading. Regardless, it should be pretty easy to figure out which wire is which. One will be +12v, one will be ground, the third is the signal wire you want.

#3 Fairtax4me

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Posted 31 March 2013 - 02:01 PM

It's the odd color.
Two will be the same, those are for the heater. The signal wire will be the different color.
Agree with 987687 though, you need an A/F ratio (wideband) sensor to get an accurate reading.

#4 soobie_newbie67

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Posted 31 March 2013 - 04:03 PM

Will any wideband o2 sensor work?  Any specifics?  How would i wire it in?



#5 987687

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Posted 31 March 2013 - 04:12 PM

I don't know if the ECU will like the signal out of a wideband, it's tuned to work with the sensor it was designed for...

I guess the best way would be to add a bung for the wideband sensor, or maybe there's one that will work with the ECU.

 

What are you trying to accomplish here? I don't really see the reason in installing a a/f on a stock 2.2.



#6 soobie_newbie67

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Posted 31 March 2013 - 05:45 PM

I just like being able to know what my engine is doing. I have also installed a oil pressure gauge and vacuum gauge

#7 Fairtax4me

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Posted 31 March 2013 - 10:14 PM

You'll have to install a standalone wideband sensor for the gage. The ECU will not work with that type of sensor in place of the standard oxygen sensor.

The ECU also may not like it if you split the signal wire to the OE sensor. I think either way you'll be better off with a standalone sensor for the AFR gage.




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