ION and EGOR

[Shannen Durphey]

Raymond C Drouillard wrote:
> 
> On Thu, 21 May 1998 22:36:19 -0400 "Thor Johnson" <thormj at earthlink.net>
> writes:
> >>
> >>snip<<
> >  Not a per-bank thingus (IIRC), but the Nissan 300ZX has 2 EGO's:
> >1 Before Cat & 1 After Cat.  I dunno what they are supposed to do
> >(cept maybe tell the mechanic that you bypassed the cat!)
> >
> >-Thor Johnson
> >thormj at iname.com
> 
> It's for OBDII (Onboard Bigbrother ???).  The smog police need merely
> hook up the connecter and note that there is less oxygen after the
> converter.  If you gut the cat, the O2 level will be identical.  Maybe
> the next thing they'll come up with is a transponder that will transmit
> your speed when pinged - or am I being paranoid?
> 
> I suppose the engine controller could use the info to detect misfires,
> less than perfect combustion, or whatever.  That's what it's for.  Yah,
> that's it.  That's the ticket....  ha ha ha  <ahem>
> 
> Ray Drouillard
> 

Engine controller uses that info to tell when cat is no
longer working. ; )
Misfires are detected by watching crankshaft revolutions
with high resolution sensor.  Rough roads can cause false
misfire codes to set.

Shannen