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Old 02-05-2011, 09:10 PM   #10
71swb4x4
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Join Date: Nov 2003
Location: Brookings, SD
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Re: Cooling issue...too cool

OldCrLvr, what Alex is saying is that without the thermostat opening the radiator isn't doing anything. So stopping air flow through the radiator won't make the car run warmer. Now if said air is also circulating around the engine and cooling the engine, then the cardboard may help.
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