Oxygen Sensor Meter

[DMan446]

From my time on this board I noticed that a lot of people have soldering skills. This is for you, especially if you are a "control freak". I plan on building 3 of these myself, one for each bank and one for the pre-main cat sensor.

The guy mentions the instructions for his carb vehicle, but it will work on ANY vehicle with an O2 sensor.

http://homepage.powerup.com.au/~camncath/how_to_af.htm


Just my opinion, but this would be a useful thread.

 

[Glacier991]

way cool!

 

[MrShorty]

Pretty slick. How do you plan to tie it into the existing wiring? Or do you plan to install additional O2 sensors?
In my opinion, just for monitoring one sensor, it's easier to just use a DMM. What would really be slick is to extend the idea to monitoring all the other sensors, too. Imagine the ability to not only monitor O2 sensors, but:
MAF
ECT
TPS
VSS
IAT
and so on. It would get to be information overload (can't spend too much time looking at the lights -- have to look at the road sometime), but it would be neat to be able to see what the engine management system is seeing/doing in more detail.

 

[V8BoatBuilder]

Awesome. I may build one (or two) and install them in the truck as an early heads up for engine problems.

Can these meters be piggybacked off the main O2 sensors without effecting the signal to the PCM? Does this meter put a large enough load onto the O2s to make a difference? What about possible damage to the PCM?

How do the Autometer A/F gauges work?

-Aaron

 

[DMan446]

I already have the O2 sensors so all I have to do is tap the signal wire.

If anyone is interested I can build and pre-calibrate the units and sell them to you at cost. The cheapest I could find online is $15.00 + an ungodly amount of shipping. Will have to get my parts list and get a total cost and let you know. PM me if you would be interested in this device. Will probably check on how to monitor other sensors too.

 

[DMan446]

Awesome. I may build one (or two) and install them in the truck as an early heads up for engine problems.

Can these meters be piggybacked off the main O2 sensors without effecting the signal to the PCM? Does this meter put a large enough load onto the O2s to make a difference? What about possible damage to the PCM?

How do the Autometer A/F gauges work?

-Aaron

Yes they piggy off the O2 sig wire. They do not put or pull a load on the sensor, so no false readings and no PCM damage