soobie_newbie67 Posted March 31, 2013 Share Posted March 31, 2013 which of the 3 wires is it? I'm installing a a/f ratio gauge. Link to comment Share on other sites More sharing options...
987687 Posted March 31, 2013 Share Posted March 31, 2013 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. Link to comment Share on other sites More sharing options...
Fairtax4me Posted March 31, 2013 Share Posted March 31, 2013 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. Link to comment Share on other sites More sharing options...
soobie_newbie67 Posted March 31, 2013 Author Share Posted March 31, 2013 Will any wideband o2 sensor work? Any specifics? How would i wire it in? Link to comment Share on other sites More sharing options...
987687 Posted March 31, 2013 Share Posted March 31, 2013 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. Link to comment Share on other sites More sharing options...
soobie_newbie67 Posted March 31, 2013 Author Share Posted March 31, 2013 I just like being able to know what my engine is doing. I have also installed a oil pressure gauge and vacuum gauge Link to comment Share on other sites More sharing options...
Fairtax4me Posted April 1, 2013 Share Posted April 1, 2013 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. Link to comment Share on other sites More sharing options...
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