air fuel ratio meter - any1 know about the o2 and airflow sensors

All you have to tap into is the O2 sensor wire -not- the AF meter. It's a simple one wire hook up, plus power and ground.

You hook into the white wire, the other are for the heater.

Yep. In reality it depends on the car where it spends most of it's time. I use these on old Zcars and I read the .5V to .85V range to tune them. Also they aren't very accurate in the rich zone, people use the wide band sensors for that but they cost $$$$$$

Correct.

It's the white wire and that is the signal it sends.

You won't hook anything up to it.

Thanks heaps for your help - im now building the meter... now i know how to hook up the o2 sensor - however I have now discovered that the two - one for each cylinder bank im guessing - which is abit annoying in a way but your right - they arnt to accurate anyway - im more just installing it so i know what the engine is up to rather then using it for tuning or anything. However with this meter - it does seem to require to be hooked up to the AF sensor - so the question still remains - is it a vane type? which wire communicates with the ECU? and how - is it though volts from about 1-5 or does it use a frequency output? I brought the kit from an electronic store if u want to have a look - here is the link

here is another link with some more info on the meter and others

If anyone know the info about the Air Flow meter - would be greatly appreciated

Cheers

Thanks heaps for your help - im now building the meter... now i know how to hook up the o2 sensor - however I have now discovered that the two - one for each cylinder bank im guessing - which is abit annoying in a way but your right - they arnt to accurate anyway - im more just installing it so i know what the engine is up to rather then using it for tuning or anything. However with this meter - it does seem to require to be hooked up to the AF sensor - so the question still remains - is it a vane type? which wire communicates with the ECU? and how - is it though volts from about 1-5 or does it use a frequency output? I brought the kit from an electronic store if u want to have a look - here is the link

here is another link with some more info on the meter and others

If anyone know the info about the Air Flow meter - would be greatly appreciated

Cheers

It doesn't hook up to the AFM/MAS, I promise you are mistaken on that. At least I've never seen one that does. Are you sure that extra wire conection isn't just for the dash light dimmer feature? I can't imagine why it would want a signal from the AFM and wouldn't use one that did. The site you sent me to says "While such a design - which works from the car's standard oxygen sensor -" and says nothing about the AFM/MAS.

fair enough - I wish I could send u the instructions becuase it does say it needs the air sensor - but u very well could be right, u seem to know wot ur talking about more then me - I will just hook it up without that input and see how it goes - if it doesnt work - I'll cross that bridge when I get there

Thanks Heaps for taking the time to help me - greatly appreciated.

Cheers

Mikey

fair enough - I wish I could send u the instructions becuase it does say it needs the air sensor - but u very well could be right, u seem to know wot ur talking about more then me - I will just hook it up without that input and see how it goes - if it doesnt work - I'll cross that bridge when I get there

Thanks Heaps for taking the time to help me - greatly appreciated.

Cheers

Mikey

Then I'd return it. None of the others do and IMHO hooking into that signal is asking for problems. I can't fathom why it would need a signal from the AFM. BTW there are dozens of free schematics on the web to build these yourself.