It is important to act quickly at any sign of overheating, driving with the engine at an excess temperature can cause damage that requires costly repairs.
2. Loss of antifreeze: It may be that the hoses or the radiator are cracked, or there is some obstruction due to dirt or lack of maintenance.
3. Road warm-up: Most likely, there is a fault in the cooling system such as a clogged radiator, a lack of coolant, or a fault in the water pump. In any of the three cases, it is recommended to immediately turn off the air conditioning, turn on the heating at maximum speed and stop the engine immediately. Once your car is parked, raise the hood, wait for the engine to cool down for about 15 minutes, and look for coolant leaks, broken or disconnected hoses, or if the radiator is clogged.
4. Thermostat: The thermostat plays a very important role in the system, since it controls the engine temperature. In 98% the failure of the thermostat is due to rust, causing it to stick and the coolant does not flow to the cooling zone.
5. Radiator fan: Its function is to let external air pass through the radiator and dissipate its temperature, making the coolant lower its temperature and re-enter the engine.
6. Water pump: We could say that it is the heart of the cooling system. Its function is to circulate the coolant through the engine and heating ducts.
The first vehicle engines were created in the late 19th century. Since then, the engines have undergone major design changes. Today’s car engines are quieter, smaller and more efficient than ever. Perhaps most important of all, they are more durable: modern car engines generally do not need very complex maintenance in their five to seven years of operation, if you follow a regular preventive and corrective maintenance routine. Some car engines can run for up to a decade without major problems. But what about engine overheating? If today’s engines are so durable, why does this heat up?
Car temperature gauge hot but engine cool
Treating the car well reduces a driver’s chances of needing to repair the engine, or worse, completely replace it. Despite the durability of the car’s engine, it cannot withstand incredibly high temperatures for long periods of time. It is not just the engine that refuses to run at such ends, as seals and joints can suffer irreparable damage after being exposed to temperatures that are not designed to handle. Overheating can permanently damage a car in addition to financially viable repair. It can help car drivers to understand how they can prevent this catastrophe and why it happens in the first place.
Let’s talk first about 3 causes, 3 consequences of the engine overheating, 3 signs of engine overheating and 1 definitive solution to this problem.
Temperature gauge rising but car not overheating
Engine overheating: causesAnything that decreases an engine’s ability to absorb, transfer and dissipate heat has the ability to overheat an engine. Unfortunately for drivers, there are a lot of potential causes, but some are more common than others. Many of them are easily repairable by a reputable mechanic and usually involve replacing relatively inexpensive parts.
To avoid being left out of hand by your car, there is nothing like providing appropriate preventive and corrective maintenance to avoid overheating problems. (Photo: Auto Service Costs)
Cause 1: low coolant level or incorrect proportion of additive in coolant
A low coolant level is probably one of the most common causes of overheating. It is necessary to keep the car’s engine running at normal temperatures. The problem has a simple solution: refilling the reservoir and avoiding neglecting levels in the future. Checking levels can be dangerous if the driver does not know what he is doing. Whenever in doubt, the driver should seek help from a mechanic or someone who is more familiar with the cars to help solve the problem. And remember: use the proportion of additive in the distilled water correctly, and never put only pure water in your coolant reservoir. The useful life of your engine is appreciated.
Cause 2: defective thermostat
Moving from the most common to the most frustrating cause, a defective thermostat can easily overheat an engine. Basically, a bad thermostat can tell the engine that the temperature is correct or incorrect. If the thermostat sends a message that there is no need for additional cooling, when the temperature is really very hot, it prevents the release of the coolant and activation of the radiator fan. After being driven for a while, the car gradually becomes warmer and warmer, eventually emitting smoke or malfunctions. The solution is to replace the thermostat, and the car should not overheat, as long as it is the only problem.
Cause 3: low engine oil or old oil
A car with a low oil level can overheat because the oil draws heat from the engine. Running with low oil or old oil is harmful in many ways. For example, the oil acts as a lubricant, and too little oil or poor quality oil can lead to excessive wear in some parts because they are not properly lubricated. Drivers can refer to their car manuals or the local car dealership to determine how much oil their car needs and how often it should be changed or completed. Different cars require different types of oil. Drivers should never put a random oil in their car. The price range of engine oil varies widely, depending on the type. And don’t forget to change the oil at the frequency recommended by the car manufacturer!
Consequence 1: overheating damage
In general, parts to prevent overheating are less expensive than repairing the damage caused by overheating. There are exceptions to this rule, of course, but prevention is almost always better than cleaning up afterwards. With an engine running frequently overheating, several important parts for its functioning are being damaged. Seals, joints, radiators, etc. Thus, overheating itself, even when everything is ok in the vehicle systems, may have caused damage to the system. It may be that you ran a period in a very hot climate, or postponed the car oil change a little.
Consequence 2: burnt / cracked head gasket
A head seal prevents coolant from leaking. When cracked or burnt, the antifreeze is free to wreak havoc on the engine that should be kept cool. This is just a problem that can occur with a head gasket, however. While the head gaskets are not expensive, replacing them takes time and high financial costs, as it can also include the engine and the head going to a grinder, in order to repair any warping caused by the high temperature.
Consequence 3: bent cylinders
Cylinders are parts of a car’s engine. They are metal tubes in which the pistons move. If the coolant escapes into a cylinder, its walls may even deform. Cylinders are incredibly important; They can be fixed when they break, but they are often not worth the money involved. Some mechanics recommend replacing the entire engine if a cylinder is damaged, especially on older cars, where the driver can easily spend more money than the car is worth on repair.
Engine warming up too fast: identifying symptoms
All drivers must be aware of the damage that overheating can cause. In addition, if overheating happens, they should have a general idea of what is involved in repairing the car. Unfortunately, this knowledge is quite useless if they don’t also know the signs of an overheating car engine. While prevention is paramount, and regular car maintenance significantly reduces the chances of the car overheating, sometimes overheating does happen. When learning to detect overheating, drivers can quickly turn off the car to prevent further damage.
Engine 1 overheat signal: white smoke or steam
Every time a driver sees steam or smoke rising under the car’s hood, they must stop the car. This is never a good sign. Sometimes it is as simple and harmless as spilled oil burning on the engine, while at other times it indicates an engine overheating. Whatever the case, it is usually worth having the car inspected by a trusted mechanic.
Engine overheat signal 2: car dashboard warnings
Unfortunately, the panel’s warnings are usually not noticed by the normal driver. Except in rare cases, the car must tell the driver that the engine is overheating with a warning on the dashboard. In newer cars, there is usually a light that comes on when the car starts to overheat. When starting the car on an automotive scanner, the scanner will show which sensors are at fault, indicating where damage may be occurring to the vehicle.
Signal if engine overheating 3: hot air coming out of the air conditioner
The hot air coming from the car’s air conditioner does not mean that the car is overheating now, but most likely it will be at some point in the near future. In most cases, changing or maintaining the coolant correctly will solve this problem.
Boiling engine: what can it be? The definitive solution for emergencies!
Knowledge is critical to avoid the problem of having an overheated engine in the first place. If a car is taken for routine maintenance, it is unlikely to overheat. Overheating is usually caused by negligence; For example, driving 20,000 km without an oil change or ignoring panel warnings are examples of problems. Sometimes things just happen, and you need to be ready for that.
For safety reasons, drivers should never continue to drive a car that they believe is overheating. Instead, they can call a towing service, your mechanic, or your insurance company . This road assistance will not solve the problem. Instead, the car will be towed to a workshop or a safe place.
And to prevent this from happening again, always maintain a routine of preventive and corrective maintenance in the car, changing the coolant and oil frequently. Thus, you will avoid problems and possible irreversible damage to your car.