Air/fuel Ratio Guage

[rogan19]

how do i install a air/fuel guage on my 2.4L ? do i just run a new oxygen sensor and then run the wires to the guage how to i got about wiring it?

[Redog]

Purple wire comming from the 02 sensor. Tap into that

[2fst4u]

there is a purple wire in the loom that comes off of your upstream O2 sensor. just tap into that for your signal.

[BlackJack]

hmm.....if you just want some pretty blinky lights that look cool, then tap it into your existing O2 sensor wire.

If you want an A/F that actually works, then you need to get a wideband O2 sensor (like Bosch for example) from this link Innovate Motor Sports (http://www.innovatemotorsports.com/xcart/customer/product.php?productid=16134&cat=251&page=1) and do it right.

[rogan19]

wht do you mean everyone says to tap into the purple wire. will it not give me an acurate reading?

[2fst4u]

no, you will be doing the right thing with the purple wire, he's just recommending a wideband air/fuel gauge to tune off of. unless you are going with forced induction or something, the pretty blinking gauge works fine.

[rogan19]

where is the O2 sensor?

[2fst4u]

what engine do you have? it's going to be located on your exhaust manifold collector. it is two wires connected to what looks almost like a spark plug. follow the wires up to the loom, and then pull the loom back until you find the purple wire.