heating issue.. need opinions

ok ill start by saying when im at a red light or a drive thru the car starts heating about 5mins just sitting there. i wasthinking a fan shroud would help since i dont have one on the car dont know why one isnt there but its not i was wondering how many people in same position have used any of these kinda products and did they help.?

Mr. Gasket Universal Radiator Fan Shrouds Fan Shroud - Steel - Chrome - 20 in. Diameter - 3 in. Depth - Universal


or anyother products i can check out.?