Actually, both are used. However, it is more common to pull air through the radiator towards the engine. This draws cooler outside air through the radiator. Pushing air from the engine towards the radiator means that you are pulling hot air from around the engine towards the radiator.
The relief vent in the radiator cap is not working, replace the radiator cap.
As coolant cycles through the engine, it absorbs heat from the engine, after which, it continues through the cooling system back to the radiator. As the coolant passes through the radiator, the heat is exchanged to the ambient air by way of airflow through the radiator fins (this is why it's important not to bend the radiator fins).
if your engine is running hot and its not your radiator you probably need to burp it to get the air out from the hoses and radiator, that should take care of the overheating problem, if it doesnt pressure test your hoses and raiator you might have a collant leak creating hot spots
The 50 ampere engine fuses is blowing because more than 50 amperes of electricity is passing through it.
More than likely, the thermostat is stuck. The thermostat is a valve that is supposed to allow water from the radiator to flow through the engine block. As the temperature rises, the thermostat opens and water from the radiator flows through the engine block and draws off heat. If the thermostat is stuck closed, the water cannot flow, no matter how hot it gets. The pressure builds and the upper radiator hose can expand to a point. Eventually the hose will rupture. Have an experienced mechanic replace the thermostat and the hose.
You most likely have a blown headgasket.
Look at the rear of the radiator approx. 1/3 from the top
If the Toyota Celica VVTI is not blowing hot air through the heater, but the engine is overheating, there could be a problem with the radiator being plugged up. Sediment sometimes builds up in the radiator that can clog thermostats. Another problem might be the thermostat sticking or the water pump is leaking.
A car's radiator is used to help keep the engine cool. During operation, an engine's moving parts create friction, which produces heat. Coolant flows through the engine picking up that head and travels back to the radiator where it is cooled down by air flowing through the radiator coils. The cool coolant then travels back through the engine completing the cycle over and over.
Add coolant, with a cold engine for safety, through the "radiator" cap in the upper hose.Add coolant, with a cold engine for safety, through the "radiator" cap in the upper hose.
Check the radiator for full coolant. Check the engines water pump and thermostat, as the engine coolant carries heat from the engine into the heater core.
The water pump humps cool water from the radiator through the engine. Hot water. Leaves the engine and enters the top of the radiator. The hot water works its way through the radiator cooling itself.