Temperature is Rising: Car Overheating in Winter

Overheating does not only happen in the summertime. The cold temperatures of winter offer
no barriers from or protection from the rising temperature of the engine. Many people are
surprised to learn that cars can overheat in the winter as well. Unfortunately, some of these
people learn this lesson from being stranded on the side of the road. They assume that since
the weather is near zero, the cold air temperature should be enough to keep the engine cool,
but this is very far from the truth. Your car can overheat even in below-zero weather if you
do not maintain your car or pay attention to the warning signs. You should know what to do
to keep this from happening to your car.

Before the Blowout

If your car is overheating in the winter, consider what is occurring right before the car gets
too hot. If you notice that your car overheats soon after you turn it on, you could have a very
low coolant level, a malfunctioning thermostat, a broken fan, or a leak in the cooling
system. These same problems can produce overheating after driving for long periods, but
instead of a faulty thermostat, your ignition timing could have the wrong settings, or the
engine could have other mechanical problems. Take your car to ASE master technicians to
determine the cause of the overheating and remedy the problem.

Antifreeze and Fluid Checks Are Essential

Check your antifreeze or coolant level to make sure you have the proper amount in the
reservoir. Coolants are very important to the engine because it transfers heat from the center
of the engine out to the outside air. The cooling system is closed, which means that it is not
designed for the car owner to have access for refilling. If there is a hole anywhere in this
closed system, your coolant level will be too low and your car will overheat. Check the
radiator for any rust and corrosion, which can cause holes and other damaging things. The
thermostat and radiator pressure cap need to be checked to make sure they are securely
seated in place to provide an adequate seal. Do not remove the radiator cap when the engine
is still hot. The boiling coolant inside the radiator has created a pressurized environment and
opening the cap can cause an explosion. Make sure your thermostat and engine fan are
working properly.

Overheat No More

Make an effort to be proactive when it comes to general car maintenance. Be sure to adhere
to the maintenance schedule recommended by the manufacturer. Use the information you
learn about your car during these sessions to keep track of the health of your car. If you pay
close attention and heed the warning signs of potential overheating, you can make the
changes you need to make to keep your car in good running condition. If you have a
mechanic to perform these tasks, make sure that you understand everything that they relay
to you concerning your car. They can take the information from the inspections and make
recommendations on how to improve the health of your car. Keeping a log of all repairs,
maintenance dates, and performance notations will work together to help you keep a cool
car.

What is the Overheating Telling You?

The wintertime is the time for freezing temperatures, snowballs, and hot cocoa. It is also the time to make sure your car is in good condition to make it through those months. Contrary to popular belief, a car can experience overheating in the winter. What makes a car overheat in the winter? If your car is running hot, the best time to assess the problem is before your car becomes immobile. There are several things you can check to determine the cause of the excessive heat and if you know what to do about them, you will not have to worry about being stranded on the side of the road.

Check Your Coolants

The first thing you should do is check your coolant levels. If your levels are low, then this may be the cause of the overheating. The radiator is not an easy piece of equipment in which to check fluid levels, but you will be able to see, with some stretching, how much coolant you have. Do not just depend on the amount you see in the overflow reservoir. Make sure that the car is completely cold before you check this part of the car. If the level is low, try adding more coolant. You can add a mixture of one part coolant to one part water, or you can buy the pre-made coolant that can be poured straight from the container. If you have to keep adding fluid, or you notice bright green or bright red liquid on the ground underneath your car, then you may have a leak. Take your car to ASE master mechanics to have the cooling system tested for leaks. 

An Idling Problem

If you notice that the car is overheating while you are idling, then you may have a problem with the cooling fan. The cooling fan is part of the cooling system and it provides air circulation across the radiator when the car is traveling at low speeds and when it is idling. Sensors that regulate the engine temperatures control the fan. It can adjust the needs of the engine if there is an addition of weight in the vehicle. When it senses that the engine is working harder to pull extra weight, it provides additional ventilation for the increased heat given off by the engine. You can check the fan by turning on the air conditioning. The fan for the air conditioner and the cooling fan are powered by the same source.  

The Need for Speed and Feeling the Heat

If you are overheating while you are traveling at high speeds, you have a different set of problems. You should make sure that you are getting proper airflow and coolant circulation. Make sure that there are no kinks, holes, or twists in the hoses. If you find any of those things, have the offending pieces replaced. Check for any holes or clogs in the radiator. You can have your mechanic take care of this for you, as cleaning out a clogged radiator is tedious work. You would have to remove the radiator and completely disassemble it before you clean it. You should also check for a stuck thermostat. If the thermostat is stuck in the closed position, it can block air from getting to the engine. If the top of the radiator hose does not feel hot when engine warms up, then the thermostat is stuck closed. If you suspect that it could be multiple things that are causing your car to overheat, you should take it in for a winter safety inspection by an ASE master mechanic.