A/F ratio..... Options

[edo17982]

Hi guys, I just received my Autometer A/F ratio but I've something that I don't understand.....
There are 3 wires:
BLACK: to ground
RED: to +
PURPLE: to oxygen sensor.

my question is:
In my 7AFE, the oxygen sensor is tho one that's originally placed in the filter box?!?!?!?
If not, which is????
Let me know asap!!!!=)=)=)

Thanks

Edo

[FallenHero]

NONO, not the one in the box. that's air temp. you want the O2 sensor, connecting to the tail pipe. there are two: one on the header in front, one on the pipe behind the engine.

[Coomer]

I was under the assumption that the purple wire connected to a pin in the ecu near your glovebox, but maybe I'm mistaken.

[edo17982]

Yes, you're right, that's the oxygen sensor
My question for you is:
WHICH IS THE SIGNAL WIRE!?!?!?!?!??!?!?!?!?!

Thanks

Edoardo

[edo17982]

PLZ PLZ TELL ME WHICH WIRE IN THE O2 SENSOR GIVE THE SIGNAL

[west_minist]

did you get through with your question?

[edo17982]

no =( I still need help

[west_minist]

You may need your manual for this.

Normally, the catalytic convertor in the middle of the car or some where around there have a little sensor with 1 or more wires sticking out of it.

The most I see have one, which is only need.

You can connect your A/F meter to that wire.

[edo17982]

Thanks West, I'll check for this and I'll let you know.
Do you know where I can find a diagram of my ECU? (7AFE)

[west_minist]

You really do not need to attach the wire onto the CPU. It can be attach anyway along the the oxygen sensor.

Either way, use google.com to do a search for it.

[west_minist]

Question:
Hi
Just few queries on the A/F meter how hard was the install, and how has it helped with your performance upgrades.

Do you need a fuel regulator for adjusting fuel delivery in addition to the meter?

Anyhow cheers in advance for any info.


Answer:
I am pass the A/f meter right now. it is not that accurate as wide open throttles and when the vehicle have just started. Either way, the better A/F meters start to run you over $300 like the motec, autronics and so on.

Ok.

The A/F helps you to run the right fuel mixture for complete combustion.

Also, it helps you to see how certain changes like exhaust and air filter will change your a/f. This also includes setting your fuel regulator.

An Adjustable Fuel Regulator W/ Fuel Pressure meter built on or separate is very good to have for fuel pressure records and for your calculation for new injectors when it is time to replce them.