Can too much coolant fluid make the engine overheat?

No, too much coolant fluid typically does not cause an engine to overheat. In fact, having an adequate amount of coolant helps maintain optimal engine temperatures by efficiently transferring heat away from the engine. However, overfilling the coolant can lead to increased pressure in the cooling system, which may result in leaks or damage to components, potentially causing overheating indirectly. It's essential to maintain the coolant level within the manufacturer's recommended range for optimal engine performance.