Radiator function is critical to the engine's ability to remain at a specified operating temperature. Without the radiator, the engine would quickly over heat and metal parts like the crank shaft, would seize up and destroy the engine.
Function
Your radiator is designed to make the most square inch surface area available to be exposed to ambient air and the air coming from the cooling fan. A good example of this is Nascar racing. You will notice that during the start of the race and during yellow flags, the cars weave back and forth. They are trying to pull the most air possible over the cooling fins to keep the car at operating temperature.
Function
The radiator is fed by the water pump. The water pump moves the engines hot water to the radiator for the cooling process to be carried out. Without this pump, the radiator would be ineffective and the engine would soon seize up. If you notice a rise in temperature in your engine, get the water pump checked out immediately to prevent engine damage.
Function
The return line takes the cooled water from the radiator and spreads it throughout the engine block and heater core. This water may feel hot to the touch but it is cool enough for engine operation. Any leaks from the return line should be repaired immediately.
Function
The heater core receives hot water from the water pump that has been heated by engine temperature. The fins in the heater core act to provides heat for the vehicle when turned on the heating system is turned on. A sure sign that the heater core is leaking, is the smell of antifreeze and steam on the window.
Function
The radiator cap is designed to raise the temperature of the engine coolant to allow it to run at specified engine temperature. Radiator caps very in their pressure rating depending on the type and year model of your vehicle. Never remove the radiator cap until the engine is cool. Check the water overflow container for coolant level rather than removing the cap. The steam and water coming from under the cap will cause you severe burns. Most modern vehicles have the radiator cap covered with a plastic piece that extends from one side of the engine to the other. Check your service manual to determine if cap removal is recommended.
