Re: [DML] Re: Lambda system
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Re: [DML] Re: Lambda system

Thanks, Bill, for an informative answer! Also for the nice additions to 
the "files" portion of the YGroups site. There's not as much helpful 
info in the workshop manual, although curiously it does mention a higher 
idle speed than those Volvo pages you scanned in...

What was called "Stage II Exhaust" a year or two ago is now called 
"Stage I" as it involves no engine upgrade. As for oxygen sensor, I 
imagine so but I will have a look. If I get home before dark tonight, 
I'll try to take some pictures.

Farrar Hudkins

P.S.: My car qualifies as "antique" in the state of Louisiana. Not sure 
if that allows me any emissions freedom or not. I will have to look it up.

content22207 wrote:
> By US emission law, Lambda is quite necessary.
> Otherwise, I'd argue that it's basically an impediment (note that
> European PRV's didn't use it). Lambda was developed to comply with US
> emissions. Only vehicles exported here were so equipped.
> Euro spec fuel distributors have no provision for external regulation
> of the lower chambers. Could that be why their idle speeds don't yo-yo
> up & down?
> Does the Stage II exhaust even have a bung for an O2 sensor? If not,
> Lambda is totally meaningless.
> Bill Robertson
> #5939

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