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Answered 2009-09-07 00:15:13

you may have a cracked hose ***Your cooling system generally runs significantly hotter when the Air Conditioning is running. This is due to the extra heat produced by the A/C condenser located just in front of the radiator. You most likely have a defective radiator or cap, or a very small leak in your cooling system. The increased heat from the A/C causes increased pressure in the cooling system, and the leak becomes more evident.

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