[20v] Lowering Emissions 90Q 20V

[james accordino]

That makes perfect sense.  From my limited chemistry
knowledge.  Two things initiate or speed up
chemical/catalytic actions/reactions.  Heat and a
catalyst.  I guess that's why they're called
"catalytic converters"?  Really good point though.
Thanks.

Jim Accordino
PA-no emissions testing.  Or any meaningful
inspections for that matter.

--- Dan Sinclair <dsinclair at icare.snalf.com> wrote:
> Definitely do not underestimate temperature of the
> Catalytic Converter as it affects emissions output.
>
> The only thing I would add/contradict:  Don't
> necessarily rely on freeway driving to heat it up.
>
> I did a 35 minute freeway run to an Emission Test
> and failed in a California-spec 10v that had passed
> with flying colors in years past.  WAY below Oregon
> standards.  The emissions guys recommended that I
> NOT drive on the freeway, but instead do some hard
> driving stop-and-go around the surface roads.  Wind
> it up.  Run it hard, park it, let it idle for 5
> minutes, and get it good and toasty.  Make sure the
> fan cycles a couple times to indicate the engine has
> hit high temp.  Freeway airflow can keep the engine
> and exhaust system relatively cool.  I think the
> theory is that you need some low speed/high rev
> stuff to get the engine and exhaust system to heat
> up.  It worked for me.  I drove back to the same
> Emissions station 20 minutes later after doing what
> they suggested, and passed with flying colors once
> again.  I've continued doing the same procedure with
> my 20v CQ and haven't failed a emissions test since.
>
> Dan Sinclair
> 1990 Coupe Q
> 1988 90 10v
>
> -----Original Message-----
> From: Wojnicki, Arthur
> [mailto:Arthur.Wojnicki at intria.com]
> Sent: Thursday, October 24, 2002 7:35 PM
> To: 'David Thoresen'; quattro at audifans.com
> Cc: 20v at audifans.com; West, Scott
> Subject: RE: [20v] Lowering Emissions 90Q 20V
>
>
>
>
> 	Hi David;
>
> 	I failed my emission also this summer on my Audi
> 100
> 	NO was over 950 (limit 857).
> 	Here is what I've done to pass it.  It passed only
> by 4 points;
> wasn't 		that close
> 	but it passed and I don't have to worry about it
> for next two years.
>
> 	1.  Poured in 1 bottle of 'GUARANTEED TO PASS',
> 	2.  When tank was almost empty bought the
> cleaneset, most octane
> 	    gasoline which is SUNOCO 94 here in Canada.
> 	3.  Drove car for about 1h just before test
> (Canadian Driver online
> advices that catalytic converter works only when
> very hot and
> one should drive for at least an hour on the highway
> before test
> 	    and do not wait for more then 10 minutes for
> the test (otherwise
> 	    reschedule).  To prove that look at VOLVO,
> they created super
>  	    fast catlytic converter heaters to meet new
> California emmision
> 	    standards.
> 	4.  Performed the test on non-humid day.
>
> 	All of that helped but it is hard to say what
> played the biggest
> role.
> 	My mechanic says that next time I will probably
> have to change
> catalytic
> 	converter.  I have least faith in 'GUARANTEED TO
> PASS'
>
>
> 	Artur
>
>
>
>
>
>
>
>
>
>


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