Turn your AC on the cooling fan should come on. Second gen's have 2 cooling fans I dunno about first gens. If the cooling fan works but turns off when your car is heated up with the AC off it's a relay. Anytime you get your engine hot you need to replace the thermostat, most will stick open forever once you get your engine in the red. Also a radiator cap that isn't making a tight vaccum seal will cause a engine to overheat.