7 Most Common Radiator Problems | Smart Parts Export

A car radiator is an essential part of any automobile because the radiator is the part responsible for cooling the internal system.  The car’s radiator works with a thermostat and water pump, which is how coolant is circulated throughout the system and maintains the temperature.

When there is an issue, like steam escaping out from your car’s bonnet the suspect goes to the radiator not being able to function properly, whereas it becomes difficult to notice actual faults when the radiator shows signs as they are not very prevalent. Your asset, your car undergoes danger as overheating to any of the car parts breaks down the automobile machinery and it won’t be able to move. 

With a defective radiator, the heat can affect gaskets, water pumps, thermostats, and even hoses. All this reduces the engine’s life drastically.

Most common radiator problems in an automobile

1. Leaks in the internal part of the automobile

The most prevalent issue as a sign of radiator problems can be detected if there are leaks in the car system. These issues can arise from the hoses which are responsible for circulating coolant from the radiator to engine parts. There is no way that the hose will itself speak to you warning about the problem.

Therefore, the owner of the car has to make a rule of checking leaks in hose pipes, and around the radiator to detect early signs if any. Also, if you feel the car parts are getting overheated pretty soon than normal, the radiator can be a problem and will need an expert to look after.

2. Rusting in the metals

The entire system of your car is made from metal, which is high quality and suitable to sustain the environment of a car’s engine. However, there is no guarantee that over time the metal cannot undergo rusting or cannot metamorphosis itself. Hence the car’s system needs to be checked for any possible corrosion in it. Rusting in the radiator happens because the coolant involved in the radiator is water.

Over time the accumulation of moisture in the radiator system can lead to damage through corrosion.  Therefore, a good practice while getting your car serviced involves checking for eroded parts or changes in the color of radiator metal. If you notice a reddish-brown layer, that is corrosion kicking in.

3. The air in the cooling system

When the car coolant starts getting heated, the fluid expands. The coolant from the radiator starts overflowing when the pressure increases. Now, if air is trapped in the cooling system, it will reduce the efficiency of the flow of coolant.  In such cases, you can notice your car getting overheated unusually and that calls for an action in the radiator. 

With the help of an expert, one can get the radiator fixed for air trapped in the cooling system, which will ensure that all the air bubbles have been removed and the radiator condition is back to normal. 

4. Overheating

The sole purpose of a car radiator is to save other car parts from overheating, even when it is under rigorous use. Overheating in a car is the worst problem because it can bother the other parts. Not just in other parts, but the radiator can also get overheated. The radiator overheating can happen due to problems persisting from a drop in coolant levels, breaking or damage to the thermostat, or blockage in the radiator hose.  There can be obvious signs like smoke escapes, or hot smell from the vents. In such a situation there is no option than to replace the radiator with reliable parts like Ford Spare Parts, Ford Eco Sports Parts & Ford Genuine Parts. 

5. Thermostat failure

A thermostat is not a part of the radiator, but a small valve which helps in controlling the amount of coolant getting circulated from the radiator. A sign of faulty thermostat can be temperature rising which in most cases leads to permanent thermostat failure. If the thermostat stops functioning the radiator will have no use and the coolant will not get circulated to cool internal parts.

The wiser option is to get your thermostat replaced, and get the system checked, because making your car’s engine work in such a condition is not a wise decision. Moreover, it increases the risk of damage over other parts, leading to severe mangle.

6. Radiator fan misfunctioning

The cooling fans are a part of the radiator which is located on top of it. The function of the fan is to pull air, and provide external cooling to parts where coolant might not reach. If this fan stops working, there will be a problem. Reasons for the fans to stop working can be motor burning, motor-fan circuit failure, and more. 

All of this constitutes to engine parts getting heated more than ever because there is no alternative to cooling for them.

7. Dropping coolant levels

Modern cars of today come with a coolant level check with the help of which one can be sure that at no point the coolant level drops than normal causing damage to engine parts. Although in case you notice a fall in coolant levels, you can be sure of the radiator being at fault. Small holes in the radiator can affect the coolant level adversely due to continuous unmonitored leakages.

The problem can also arise from leaking gaskets that most of the time causes the coolant to flow away creating a domino damage effect on all related parts. For such malfunctions, get your car handled and repaired by experts so that everything goes back to normal.


A radiator is like that friend that calms and does the job of cooling the overheated car parts. The radiator is as important in a car as any other part. A major set-back develops when the cooling system of the car fails, and we do not want that. That’s the reason why acknowledging the signs of fault and problems in the radiator is important. 

A good practice to do is always get your car serviced and checked by experts or service stations for maintaining the top-notch position of your car. So, get your car radiators problems solved through this article and enjoy the ride!

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