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    prairie son's Avatar
    prairie son Posts: 40, Reputation: 2
    Junior Member
    		  
    #1

    Jun 9, 2008, 04:35 AM
    1999 Chevy Lumina cooling fans
    What is the engine temperature that triggers the radiator cooling fans and what controls it?:confused:
    Thanks, Prairie Son
    Credendovidis's Avatar
    Credendovidis Posts: 1,593, Reputation: 66
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    #2

    Jun 9, 2008, 05:19 AM
    Water cooling circulation is set by a temperature switch in or near the exit of the radiator.
    Fan action is controlled by another temperature switch in the cooling circuit.

    Have a look at these links :

    Howstuffworks "Car cooling thermostate"

    And

    Howstuffworks "Car fans"
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