My car a 1991 Camaro Z28, V8 gets about 210-240 temperature if I'm Lucky it won't get hotter. I put a new radiator, a radiator top,antifreeze,a new fan, and hoses. But when a star running the car in high speeds 70-90mph the car's temperature goes up in matters of minutes. The fan doesn't turn on until the temperature is around 210-230, is that too late, is the fan turning on to late if so what can a do so it turn on in cooler temperatures. Also my ac use to work find but know it doesn't even turn on. What can I do? Thanks.