If the radiator core is broken, immediately stop driving and allow the engine to cool. Check for visible leaks and avoid starting the vehicle again to prevent further damage. Contact a mechanic to replace the entire radiator, as a broken core cannot be repaired safely. In emergencies, consider using a portable coolant pump to temporarily top up the system while en route to a repair shop.

A broken radiator core fails to regulate engine temperature, leading to overheating and potential mechanical failure. According to the National Highway Traffic Safety Administration (NHTSA), 12% of engine-related breakdowns in 2022 were linked to cooling system issues, with overheating accounting for 7% of total incidents. A study by AAA found that 20% of drivers who ignore radiator leaks face engine repairs costing $1,500 to $4,000, compared to $300–$800 for timely replacements. The radiator core’s role in dissipating heat is critical; its failure raises engine temperatures by up to 40°F (22°C) within minutes, damaging cylinders, heads, and gaskets. Data from the Society of Automotive Engineers (SAE) shows that 80% of engines experiencing overheating due to cooling system failures require full component replacement, emphasizing the need for prompt action. Delaying repairs increases the risk of accidents, as overheating engines reduce traction and driver control. Mechanics recommend replacing the radiator and flushing the cooling system to prevent debris buildup, which exacerbates core damage. Ultimately, proactive maintenance saves costs and ensures safety, aligning with industry standards outlined by the American Chemical Society (ACS) for automotive cooling systems.