When an internal combustion engine (ICE) operates, the temperature inside the cylinder block can reach up to 3632 °F. For the engine to work in a given temperature mode, it must be cooled; otherwise, the power unit will simply overheat and fail. Therefore, ICE cooling is one of the most important tasks that modern car designers solve while improving both individual parts and the entire system.
The radiator is the main cooling system component, which constantly keeps the engine temperature under control. As it plays a vital role in preventing overheating, you should quickly notice when it fails and, in turn, visit the nearest auto shop as soon as possible.
A car engine works due to a constant cycle of fuel combustion. As a result, all parts become very hot. When the temperature of the metal parts rises, they expand and, if not cooled, cause various problems in the powertrain, such as cracks in the cylinder head or in the cooling jacket, deformation of the cylinder head, excessive thermal expansion of the pistons, and so on. Ignoring such problems will result in costly engine repairs.
For temperature stabilization, all internal combustion engines are designed with a cooling jacket, through which the liquid circulates with the help of a pump. The heated coolant flows through the line to the radiator. There, the fluid is cooled and then flows back into the engine. This process keeps the engine at operating temperature.
Any car radiator will have a similar device. The design of this part will consist of three elements:
All radiators are divided into two types according to their material:
Copper (or an alloy of copper and brass). Such radiators have improved heat exchange due to the copper’s ability to warm up quickly. The disadvantage of using such an alloy is considerable weight and high cost. However, such radiators can be repaired.
Aluminum. This material is popular due to its low weight, but tubes in such modifications are not soldered to heat exchanger fins, and the tube block usually consists of just one tube.
If you leave the issue as is, the repairs will quickly grow in price and complexity. So, pay attention to the sensors and try to notice exactly when the temperature deviates from normal operating ranges.
The barrier between the refrigerant and the transmission fluid fails, and the fluids mix. If you notice sediment in the radiator when replacing the fluid, it is worth checking all of its components for any signs of faultiness. But if you're lucky, a small amount of sediment won’t lead to internal damage, negating the need to replace the radiator.
If it’s impossible to properly repair the radiator, then replacement is your only option. Here, the prices vary depending on just what car you own, so it’s best to consult with a mechanic to get a reasonable estimate. Generally, the cost averages out on $700, but the final amount could go up to $1,000.
It is pretty risky to drive a car with a faulty radiator; even a single case of overheating can lead to irreversible consequences, such as failure of the starter or even the engine − the most expensive part of the car. This is why it’s essential to know which signs indicate radiator faultiness.
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