I have a 1999 Grand Voyager. I have replaced the radiator, radiator fan assembly, thermostat (2 times), Temperature sensor (2 times) and fan relay (2times). The engine does fine as long as the car is moving, such as on the freeway. When I have to stop at traffic lights or slow moving traffic, the engine heats up. I wonder if the relay should have had lithium spread over the flat metal plate? The fans don't seem to be coming on. As far as I can tell everything is connected properly.