Hooking up air/fuel meter questions.

[DeadHead86]

A while back my O2s went bad and as a result the truck was running rich. I drove like that for too long not knowing about it and jacked my cats up. About to replace my exhaust and O2s. Id like to hook up a air/fuel meter so I can catch these issues before they get bad next time. Does anyone know what color wire running to the O2 sensor I need to tap into? Seems that it should be pre cat. Correct?

 

[mbrummal]

the stock O2 sensors are narrow band. A wide band sensor would be better to monitor that. you can get a gauge with an O2 sensor included.

 

[DeadHead86]

Where might I find that? Is there a particular brand?

 

[robertf]

this is what I use
http://www.moates.net/innovate-g5-gauge-lc1-kit-pn-3822-3822-p-195.html?cPath=48

 

[DeadHead86]

Ouch. I have on the cost me about 50 bucks I think. I dont need anything thats pin point precise, just as long as I have a general idea if its getting bad.

 

[DeadHead86]

Is it possible to just hook up the cheap one to the stock O2s and have something that works well enough?

 

[robertf]

no, narrowband can't tell you magnitude, only direction.

 

[DeadHead86]

no, narrowband can't tell you magnitude, only direction.

Greek to me. I guess Ill be doing some homework this week.