When summer temperatures rise, your engine’s cooling system becomes one of the most important safeguards against breakdowns. Whether you’re stuck in traffic or heading out on a road trip, an overheating engine can quickly turn into a major (and expensive) problem. Fortunately, with a little preventive maintenance, you can keep your cooling system in top shape and avoid being stranded on the side of the road.
Know What the Cooling System Does
Your cooling system regulates the engine’s temperature by circulating coolant—also known as antifreeze—through the engine and radiator. As it flows, it absorbs excess heat and releases it through the radiator with the help of fans. This process keeps your engine from running too hot, especially during long drives, uphill climbs, or stop-and-go summer traffic.
Check Coolant Levels and Condition
One of the easiest and most effective ways to prevent overheating is to regularly check your coolant level. Look at the reservoir (not the radiator cap, especially when the engine is hot), and make sure the coolant is at the proper level and looks clean. If it’s low, top it off with the correct type of coolant recommended for your vehicle. If it’s discolored or full of debris, it may be time for a flush and refill.
Inspect Hoses, Belts, and Connections
Over time, rubber components like radiator hoses and belts can dry out, crack, or loosen. A failing hose can lead to a coolant leak, while a worn belt can affect your water pump’s performance. Take a few minutes to visually inspect these parts for any signs of wear, bulging, or leaks—especially before a long trip.
Make Sure the Radiator and Fans Are Working
The radiator needs good airflow to do its job. Make sure the front of the radiator is clear of bugs, leaves, or debris. Also, check that the electric cooling fans turn on when the engine gets hot or the AC is running. If the fan isn’t kicking on, it could indicate a bad relay, fuse, or motor.
Final Thoughts
Your engine works hard, especially during the summer. By taking a few simple steps to maintain your cooling system—checking coolant, inspecting hoses, and keeping your radiator clean—you can prevent overheating and keep your car running cool, even on the hottest days.