[s-cars] Emissions fun

[weski at verizon.net]

No help on the emissions part of your post as we don't have to test for 
this in my area but I can offer another item to check for your AC 
question.  I agree with what others are telling you regarding the aux 
fan - if it is not running you will rarely have cold air blowing while 
your car is stopped - not enough air flowing through the radiator to 
lower the refrigerant temps.  My AC was spotty at best this Spring and 
figure it may need a recharge but it turned out my aux fan was not 
running at all.  The culprit was a resistor located on the drivers side 
of the radiator (had to pull the headlight to get to it).  The part 
number was 4AO 959 493 and EKTA calls it a series resistor for vehicles 
with heavy-duty water cooling system and/or trailing towing - ETKA list 
price is $92.00.

Paul Dooley
95 S6 - withcold AC now and just in time for some 80 degree temps to 
come later this week.

On 5/22/2012 1:16 PM, Bill Mahoney wrote:
> TB,
> I can't speak so much to the emissions issue...  But, O2 sensor sounds like a good suspect.
> Add a can of BG44k to a tank of gas.
> You can add up to about 20% e85, aka e70 in some locales, for emission test passing purposes.. or, some Heet to an almost empty tank of gas.
> (I have been adding about 2-2.5 gallons e85 with each fill up since Feb.   Car seems to really like this blend.)
> WRT recirculation with the AC, check your electric aux fan.  Could be old and corroded and not work.. which would blow the bigass fuse.
> I believe there is a thermal switch, bottom of the driver's side of the radiator, the bigass fuse in drivers side footwell for S6 AND a relay in the pass. side footwell for the electric fan.  These all must work for the electric fan to work which I believe needs to work under some heated conditions for the recirc.  switch and AC to work properly.
> The Fuse could be located in pass. side footwell for the urS4...???
> Or
> Moving to North Dakota could resolve both your emissions problem and AC problem.
> Good luck!
> Bill~fanning emissions~M
>
>
>
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