I have a 97 Cobra with 77K miles. Temp guage going up to just under the red line. Replaced t-stat and refilled coolant. The temp is still going up to the red line. A/C blows warm when car is idling. Starts blowing cold as you get moving. Waterpump seems fine. No play in the pulley when belt is off. No noise coming from it. Any ideas would be greatly appreciated. Thanks.