ac recharge port

[Joshua van Tol]

On Jun 30, 2005, at 1:45 PM, David wrote:
> Now that everything is converted, I'd consider adjusting the AC  
> Temp Sensor (not sure of the large Audis have them, I know the typ  
> 81 & 85 do). This is the sensor that controls at what temp the  
> compressor cuts oput. The factory setting is around 42*F. I've  
> adjsuted mine down to 34*F and am very happy.

Be aware that if you live in a humid climate 34 degrees F may be too  
cold. That's the temperature of the air coming out. The actual  
evaporator surface will be colder. Also, it's not uncommon for a  
fairly large gradient of temperature to exist across the evap.

Bottom line, in most cases 34 degrees is too cold to assure that  
there will not be evaporator freeze up in humid climates. I work for  
one of the automotive OEMs and believe me, extensive testing is done  
to set the evap cycle point as cold as possible without risking  
freeze up. Also the number of cycles per minute of the clutch is  
fairly important, as it is possible to wear out the clutch with  
excessive cycling.