[09k20z3]

i have one question, i want to know what color wire on the o2 sensor to hook up a air fuel gauge?

 

[FijiBlueFG2HT]

its oxygen colored

 

[09k20z3]

there is a 1white, 2 black, and 1 blue wire. i guess you are talking about the blue wire?

 

[obert]

I dont think you can do it that way ?

 

[skunk2civic]

You'll have to check the voltage on the wire. I'm not sure because those type of AFR gauges are really innaccurate.

 

[09k20z3]

yea i just tried all 4 wires on the primary o2 and all 4 read rich. but my car doesn't smell rich or lean.

 

[skunk2civic]

Well, theres only 1 wire that you need to read the voltage off. I dont know what lean smells like, ive never really messed with the primary 02, but usually its a green wire.