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Old 02-17-2009, 01:53 PM   #68 (permalink)
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Join Date: Feb 2009
Location: Algarve, Portugal
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Dobbin - '04 Dodge Dakota 3.7 V6 A/T
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I'm new around here, so excuse me if this idea has already come up. It strikes me the only time you'd want the grille door open is at a high coolant temp, which is exclusively a problem at low speed, and that you'd want it closed at lower coolant temp, which would generally occur at higher speeds. So hows about a nice simple spring-loaded flap which would stand open at low speeds and push closed at higher speeds?

A little experimentation with spring rates would allow opening and closing at a desired temperature.
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