Jump to content
Ultimate Subaru Message Board

Recommended Posts

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.

Share this post


Link to post
Share on other sites

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.

Share this post


Link to post
Share on other sites

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.

Share this post


Link to post
Share on other sites

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.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×