![]() If the radiator becomes clogged with dirt, debris, or corrosion, it can restrict airflow and hinder the cooling process. The primary function of the radiator in Sonic is to dissipate heat from the coolant by allowing air to flow through its fins. Dirty radiatorĪ dirty radiator can be a cause of engine overheating. If it’s blown, replace it with a fuse of the same rating. If the radiator fan starts working after the swap, the relay was likely the issue.Īlso inspect the fuse related to the radiator fan. You can test the relay by swapping it with a similar relay in the fuse box. If the relay fails, it won’t send the necessary electrical signal to the fan, causing it to stay off when it should be cooling the engine. This relay acts as an electrical switch that activates the fan when needed. Often, the radiator fan is controlled by an electrical relay. If these fans fail to operate correctly, especially in stop-and-go traffic or at low speeds, it can result in engine overheating. Bad radiator fanĮlectric cooling fans are responsible for drawing air through the radiator to help cool the coolant in Sonic. ![]() Look for puddles or stains beneath your vehicle, as these may indicate a coolant leak. Regularly inspect the cooling system for leaks and replace damaged or worn components promptly. ![]() Even a small leak can have a significant impact on the cooling system’s effectiveness. Common areas for leaks include radiator hoses, the radiator itself, the water pump, and the heater core. Leaks in the cooling system can lead to a loss of coolant, which in turn causes the engine to overheat. Ensure that the coolant mixture is at the recommended ratio of water to coolant, as specified in your vehicle’s owner’s manual. Regularly check and maintain the coolant level as part of your routine vehicle maintenance. This can result in rapid temperature spikes and overheating. ![]() When the coolant level is low, there is not enough fluid to absorb and transfer heat away from the engine. Coolant plays a critical role in regulating the engine’s temperature by dissipating heat. One of the primary reasons for engine overheating in Sonic is a low level of coolant or antifreeze in the cooling system. ![]()
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