Quote:
Originally Posted by ps2fixer
The cooling fan shouldn't be used if you're moving more than like 35mph, there should be a LOT more air being forced through the radiator than what the fan could ever pull.
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Wrong. Fans need to pull in way more air than what gets forced through the front. Even at speeds of 50-60mph or perhaps even more, the air that's naturally flowing in through the front may not be enough.
For an example, on long hill climbs at highway speeds the fan will kick in and suck in way more air than what's forced in by moving through the air. At least this has been my experience in several vehicles. I had the fan motor fuse blow once in one of my cars going up hill at 50mph. The engine began to overheat, and it was only about 50°F outside. I found what blew the fuse (a screw in the cigarette lighter) and replaced the fuse and things went back to normal for the rest of the climb.