![]() The inlet tank guides the warm coolant through the radiator, where it dissipates heat. Hot coolant runs from the engine through the hose to the radiator. The radiator hose connects the engine and radiator together. The heat dissipates from the coolant before it heads back into the engine. It’s meant to reduce the temperature of the coolant with the help of cooler air flowing through the fins. The radiator is a main part of the engine’s cooling system. This thicker fluid has trouble flowing through the radiator, causing the same overheating issues. This contaminated fluid can also become thicker than it should be. If the system is contaminated with sludge, the coolant starts to appear rusty or oily instead. ![]() Coolant that’s flowing freely through the engine should be bright in color, whether it’s green, orange, pink, yellow or blue. Without the right amount of coolant, the engine is sure to overheat.Īdditionally, the fluid can start to look contaminated. If there’s a leak, the coolant level may drop too low. Therefore, you may notice an inability to get warm air out of the vents. When the radiator gets clogged or if there’s a leak, the hot coolant may not be able to get to the heater core. This warm air is then blown into the cabin with the help of the blower fan. The heater in the car’s cabin relies on the hot coolant passing through the heater core to produce warm air. You may not think that the cooling and heating systems have anything to do with the radiator, but that’s not true. In exchange, the coolant can’t remain at a normal temperature, so the engine starts to overheat. If the fins get damaged, the airflow may suffer. This problem occurs even more frequently if you travel off-road or drive down a dirt driveway. Because of where the fins sit, they are susceptible to debris, such as rocks kicked up from the road. The radiator fins are made from metal that can become damaged. That’s why all coolant leaks should be dealt with promptly. You may notice the leak at the radiator or in one of the hoses where the pressure built up.Įither way, the lack of fluid can quickly cause the engine to overheat, especially if the system doesn’t have enough fluid inside. When the fluid in the radiator isn’t able to flow properly, a leak can occur from the excessive amount of pressure. If you allow it to continue, the engine will eventually overheat and you could damage the motor. With a blockage preventing airflow, the fluid can’t cool down, so the engine temperature reads higher than usual. If you are extremely attentive, you will notice even the slightest variations in temperature, which gives you the warning you need that something is wrong. When it starts to read slightly higher than normal, it means that the coolant is getting too hot. If you are accustomed to driving your vehicle, you’ve likely learned where the temperature gauge normally reads. RELATED: 9 Causes of an Overheating Car Engine 2. Either way, as soon as you notice your car overheating, it’s important to stop driving immediately. For example, a defective water pump or thermostat failure can also lead to an overheating engine. There are many other issues that can lead to an overheating engine, so more diagnosis is needed. The temperature gauge will also be pegged in the danger zone. You may see steam or smoke coming from under the hood when it overheats. If there’s a clog, then the radiator can’t provide the cooling power needed to disperse the heat. The engine tends to overheat once the radiator gets bad enough. Let’s examine these six top symptoms of a bad radiator more closely. You may also notice a coolant leak, damaged radiator fins, a heater malfunction or deal with persistently low coolant levels. When a radiator is bad or clogged, the engine starts to overheat and you’ll see higher temperature readings. Conclusion Symptoms Of A Clogged or Bad Radiator
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