[s-cars] Re: Emissions Question (NTC- no turbo content)

[Tom Mullane]

T-stat was replaced with the timing belt last summer.  I used the higher
temp t-stat.  guage does read lower than I would expect, though. (But no
lower than it did with the old one).  Oil temp is normal.

Tom
----- Original Message ----- 
From: "William Noland" <wenoland at pacbell.net>
To: <s-car-list at audifans.com>; <tmullane at snet.net>
Sent: Thursday, April 08, 2004 9:03 AM
Subject: Re: Emissions Question (NTC- no turbo content)


> One item that can cause high HC is a bad thermostat. On the S-Car, if
> the coolant temp doesn't consistently make it to the first bold
> hashmark, the thermostat is probably toast. Is the Coupe coming up to
> temperature properly.? Just a guess -- members of the same family and all.
>
> Bill Noland
>
> >The Coupe, however is a different story.  Not a turbo,
> >but is a 20v.  Perhaps the list can impart a bit of wisdom?
> >
> >Anyway, the test measures CO and HC at speed (whatever that means) and at
> >idle.  CO is fine both cases. HC is fine at speed, 151 ppm out of 220
> >allowed, but HC is high at idle, 351 ppm versus 220 allowed.  There is
> >nothing wrong with the car; I have been through the Bentley and checked
just
> >about everything I can think of, and the tune up items are within 10k
from
> >the time they were replaced.  Friends at Audi claim that the 20v cars can
be
> >difficult to get through emissions; they say it is simply the nature of
the
> >beast.  Several people suggested that I should change the oil, and get
the
> >car red hot before going back.  I will do both of these things.
> >
> >My question is this:  does anyone have any tips for lowering the HC?
> >
> >
> >
>