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Carrera 3.2 A/C Outlet Temp

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Old Jul 27, 2011 | 04:54 PM
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hwasser
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Default Carrera 3.2 A/C Outlet Temp

What should it be with an R12 original system? What if the system was upgraded for R134A?
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Old Jul 27, 2011 | 06:48 PM
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wwest
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From: redmond wa
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The only thing that is relatively certain is that the evaporator core should decline to <35F with the blower OFF.

The definite "number" would be the difference in evaporator plenum inlet air temperature vs the outlet air temperature at the same low blower speed for both.
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Old Aug 5, 2011 | 09:37 PM
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The AC air outlet temperature varies.
Assuming your system was perfectly charged, everything was running perfectly, you can expect
'about' 35 degree difference between your vent temp and the outside air temp.

In some cases the difference might be slightly better or worse. There are many variables (once again with a perfect system) such as the color of the car (dark colors are harder too cool than light colored cars), the number of occupants in the car, the speed you are driving, if the car has sat in the sun on a warm day it will take longer to cool down, fan speed 1 makes colder temps than fan speed 3 however the volume of air is less on speed 1, etc.

Good reading material here:
http://www.griffiths.com/porsche/ac/ice/index.html
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