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the fan has a thermostat that is set to the manufactures specs. They usually set them pretty low, because of the increase in the use of aluminimun head. If they get to hot they can be warped. hope it helps. duboff I have the same problem - thermostat doesn't open and fans don't come on until temp gauge is at or lose to the L in normal (just before over-heating). What was the solution to this problem?

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Q: Why do the cooling fans wait until the temperature gauge is at the L in NORMAL to start running and how long should the cooling fans run in this situation?
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