Quote:
Originally Posted by CharlieHustleX5
The 2 fans are seperate.
The Aux. fan turns on when the AC is on full blast, if the car reaches higher temps towards 100 degrees celsius to aid in cooling the engine down, and under circumstances when instructed.
I've driven in SoCal heat for almost 2 summers without a working AUX fan. Just keep all cooling components in top condition, keep your coolant as fresh as factory suggests, and you should be fine. Thats all I've done.
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The aux fan's primary job is to aid in the transfer of heat from the a/c condenser. While you may (or may not) notice a difference on the inside, the high side on your a/c system has to get well into the 200 range just to accomplish the job that would normally happen at 175/180 PSI.
For those that disable/remove their aux fan for whatever reason, you're really doing your a/c system a huge disservice.
Take a look at a large commercial building's air conditioning/refrigeration system. The condenser will always have a huge fan, and sometimes a water immersion system to coax the refrigerant back from a gas to a liquid. It doesn't matter if it's ammonia or R134. The science is the same.
The engine's operating temperature has no effect on this transformation.