[Diy_efi] lean switching sensors?

[Perry Harrington]

This is the point at which the O2S switches from lean to rich.

The common mode is .450v.  On my Volvo it's .760v or something like that.

You can see this on OBDII cars.

Lean vs rich switch is just whether the O2S starts to cycle around lean (.25v)
or rich (.76v).  I presume that the application has a lot to do with induction.
My NA mustang uses regular bosches that switch at .45, my Volvo is HPT induction.

--Perry

On Sat, May 04, 2002 at 08:23:00PM -0700, 944Technologist wrote:
> Any idea what a "lean switching sensors" is or is this just nonsense?  FR
> Wilk
> 
> "The protection tubes and ceramics play a big role in where the sensor
> switches its voltage when the mixture changes from rich to lean. Most of
> Porsche's sensors tend to be lean switching sensors and using the wrong
> universal(there is more than one universal)could effect catalyst life."
> 
> 
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-- 
Perry Harrington             Linux rules all OSes.               APSoft      ()
perry at apsoft dot com 			                 Think Blue. /\

Those who would give up essential liberty to purchase a little temporary safety
deserve neither liberty or safety. Nor, are they likely to end up with either.
                             -- Benjamin Franklin


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