ChampagneSW2 -
Quote:
Originally Posted by ChampagneSW2
the refrigerant going to your A/C condenser is very hot..it goes straight from the compressor outlet to the condenser, so your theory of cool gas couldn't work.
They automatically turn the fan on when you hit the A/C button because that is the most efficient way to run the A/C. The more cooling you get in the condenser the more cooling you get in the car.
That is interesting that the guy was insulating his pipes...in any car I've seen the expansion valve in the A/C system was right in front of the evaporator in the car. But he does have an idea that you may get some heating of liquid refrigerant right before the expansion valve.
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Welcome to EM!!!!!
Bingo. I tested this with blackjackel's 2005 Corolla and it does the same thing. I didn't intuit that it was more efficient. I thought the reason was to make sure that the additional A/C load didn't overheat the engine (i.e. if A/C on when it's hot outside, then turn on fan).
Turning on the A/C in Saturns is a(gain a non-intuitive) way to cool off the engine.
CarloSW2