Re: 0xygen Sensor....HELP

[Orin Eman <orin@wolfenet.com>]

> The Black is the one.
> As the engine idled (hot) I get readings from less than 100mv to 750mv.
> (moves between these 2 readings as it idles.)

Normal.

> Introduced Propane into intake air chamber with no rise of voltage readings,
> didn't cahange at all.

Also normal.  The ECU is controlling the mixture between these limits.

> Opened up a vacum leak with same results, voltage went from 100mv to 750mv
> even with a vacum leak hissing away.

> I heard that you can pull out the sensor & heat it up with a propane torch &
> this may fix it.

It's working.  It might be old and tired, but it's working. 

You could disconnect the sensor and measure its voltage disconnected,
then add the propane/create a vacuum leak.  Then you should see
something.  With the sensor still connected, the ECU will fight you
every step!

Orin.