* Faulty thermostat: The thermostat is responsible for regulating the flow of coolant through the engine. If the thermostat is faulty, it may not open properly, restricting the flow of coolant and causing the engine to run cooler than normal.
* Faulty temperature sensor: The temperature sensor is responsible for sending a signal to the computer that indicates the engine's temperature. If the temperature sensor is faulty, it may send an inaccurate signal to the computer, causing the computer to think that the engine is cooler than it actually is and adjusting the fuel mixture accordingly.
* Faulty water pump: The water pump is responsible for circulating coolant throughout the engine. If the water pump is faulty, it may not be able to circulate coolant properly, causing the engine to run cooler than normal.
* Leaks in the cooling system: Leaks in the cooling system can allow coolant to escape, causing the coolant level to drop and the engine to run cooler than normal.
* Incorrect fan clutch: The fan clutch controls the speed of the cooling fan. If the fan clutch is not working properly, it may not engage the cooling fan at the correct speed, causing the engine to run cooler than normal.
