2. Faulty Thermostat: A faulty thermostat can prevent coolant from flowing properly, causing the engine to overheat. Test the thermostat by immersing it in hot water. If it doesn't open at the specified temperature, replace it.
3. Clogged Radiator: A clogged radiator can restrict coolant flow, causing the engine to overheat. Clean the radiator by flushing it with a garden hose or using a radiator cleaner.
4. Faulty Water Pump: A faulty water pump can't circulate coolant properly, causing the engine to overheat. Check the water pump for leaks or if it's making a grinding noise. If it's damaged, replace it.
5. Low Coolant Level: A low coolant level can cause the engine to overheat. Make sure the coolant level is between the "Full" and "Add" marks on the coolant reservoir.
6. Blown Head Gasket: A blown head gasket can allow coolant to leak into the combustion chamber, causing the engine to overheat. Check for a blown head gasket by looking for coolant in the oil or exhaust. If you see coolant in either, you'll need to replace the head gasket.