Re: ONE WIRE O2 TO HEATED O2

[Shannen Durphey <shannen@grolen.com>]

The sensor is powered with key on.

Mfgrs aren't claiming lead tolerance, it's the people running them.
Shannen

Mike (Perth, Western Australia) wrote:
> 
> At 01:35 PM 8/4/2000 -0400, you wrote:
> >Yep, done that.
> >New O2 has 3 wires, signal, one to power, and one to ground.  Use ohm meter
> >(DVM) for finding the heater wires.  Actually there is a 4 wire version but
> >the're $$.  There are different ones, but I've never been picky about which
> >one (just stick with Delco/GM/AC {for a gm application}), some claim some
> >are more tolerant of lead.
> 
> Just curious - is the heater on all the time or does the ECU only turn the
> heater on when its at low load - such as idle and during warm up ?
> 
> Incidentally, I'd doubt any credible supplier would claim any sort
> of lead resistance, the stuff is insidious and messes up lots of industrial
> sensors far too easyily...
> 
> Rgds
> 
> Mike
> 
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