How to Diagnose Your Car’s Overheating Engine

If your car engine is overheating on a regular basis, it is time to stop driving, and start figuring out what’s causing the problem. It is important to address an overheating engine issue as soon possible; because the longer your engine experiences these issues, the more damage they will cause overtime. Worst of all, these damages will lead to costly engine repairs or full-on motor replacement. You can easily avoid these financial woes by simply addressing an engine problem when it becomes apparent to you. This can literally save you thousands of dollars.

Start by learning the most common causes for overheating motors, and then take some time to think about your driving habits. From there, you can make the necessary adjustments to get your car safely back on the road. Continue reading to do just that!

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Top 3 Causes for Overheating Engines

❶ No Coolant

This is the number one cause for an engine that has begun to overheat. Always be sure to keep a spare bottle of coolant, also known as radiator fluid, in your trunk. If your vehicle gets low on a particularly long road trip or hot day, you can top off your radiator with more coolant. If more coolant works at first, but later the engine overheats again, you could have a coolant leak. Although more fluid solves the immediate problem, it is a sign that your vehicle probably needs some other types of fluid refills and flushes, including brake fluid, motor oil, windshield wiper fluid, transmission fluid, and more.

❷ Defective Coolant Fan

Sometimes you have enough coolant, but the fan is not working properly. When the coolant fan is not running, it will not cool down the coolant running through the radiator and engine like it is designed to do. This is generally caused by a faulty fan motor, but can also be caused by a bad radiator switch. If your car engine begins to overheat, you can lift your hood and take a look at your coolant fan to see if it is running or not. They are usually located right on or near the radiator.

❸ Broken Fan Belt

Like your coolant fan, your engine’s fan belt plays a major role in controlling temperature. It is one of the most common causes of a reoccurring overheating engine. The worst part about a broken fan belt is that it is often a first indication of other engine malfunctions and needed engine repairs. Most people can tell they have a broken fan belt by simply looking at their engine from under the hood.

Monitor Your Driving

To better figure out what’s causing the overheating, think about the type of driving you are doing when it occurs. Is your car engine overheating at stoplights or on the highways at high speeds? This information can give you clues as to why your car overheats.  If the vehicle is overheating during an idle or stopped position, this could point to the electric cooling fan motor. This component is located near the radiator. To check for faultiness, run the vehicle’s air conditioner and listen for the fan to start. If the fan doesn’t turn on, it may be from a faulty sensor or the fan in general. If your car is overheating at high speeds, it could be anything from a kinked radiator hose to a defective thermostat. 

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3 Things You Should NEVER Do When a Car Engine Overheats

An overheating car could be caused by a variety of reasons.  It could be a broken radiator, a kinked radiator hose, a faulty thermostat, and maybe even a lack of coolant.  There are many more reasons as well.  No matter what the cause, if you are ever in a similar situation, there are three major things you should never do while your car is still hot or overheating.

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❶ NEVER Continue Driving

When you first notice that your vehicle is overheating, it is crucial to pull over and stop the car immediately.  An overheating car should never be driven.  This can be very dangerous.  Wait until your car is entirely cooled down before starting the engine again.

❷ Never Check Radiator Fluid

Checking your fluid levels in your radiator when the car is overheating is simply asking for trouble.  It can be extremely dangerous.  There is a lot of pressure built up beneath the radiator cap.  Boiling hot fluids and steam can shoot out at high speeds, potentially burning and injuring anyone in its path.  Determine whether or not you are on an inline for accurate fluid readings.  If the car is not level, the fluids cannot be level.

❸ Never Use Cold Water

When a car’s engine has overheated, do not put cold water in the vehicle.  Not only can this damage the engine block and cause it to crack, it can lead to other severe auto damages and costly repairs.  Let a car cool down completely, as mentioned earlier, before tending to an overheated engine.

Causes for Overheating Engine

The most common reason a car overheats is because it is out of coolant! If you use the improper coolant concentration in your vehicle, you can definitely expect it to overheat at some point. It is important to have the proper water-to-coolant ratio for proper cooling operation. Refer to your vehicle’s owner’s manual to learn the proper coolant concentration recommended for your make and model car or truck. If you don’t have your owners’ manual, look online for a replacement copy. You can download one for free by visiting your vehicle’s manufacturer website.

What You SHOULD DO

First and foremost, always be sure to let the engine cool down completely before opening the hood. Now, since the most common reason a car overheats is because it is out of coolant, always keep a bottle of radiator fluid in your trunk so that you can be prepared in the case of an emergency. If you are stuck on the side of the road with no one to call for help, contact a local 24 hour roadside assistance tow truck for help.

24 Hour Roadside Assistance in Indianapolis

Call Zore’s Towing at 317-247-8484 for 24 hour roadside assistance and towing services in Indianapolis and throughout Central Indiana. Our friendly staff is waiting by the phones, ready to help you get back on the road, safe and sound. We operate 24 hours a day, 7 days a week, and 365 days a year, so you can always count on us. Request a free estimate, today.

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Why is My Car Engine Overheating?

You’re driving, you see the temperature gauge going up, and you start to panic. This is sound familiar? An overheated engine can be foreseen, but it can also be unexpected. That is because there are several reasons that can cause a car engine to overheat. But overall, the reason why a car engine overheats is because something has obstructed that the cooling system’s ability to absorb, transfer, and dispel heat. Continue reading for a closer look at the common causes of overheating car engines.

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Indianapolis Roadside Assistance 317-247-8484

Improper Coolant

The most common reason a car overheats is because it is out of coolant! If you use the improper coolant concentration in your vehicle, you can definitely expect it to overheat at some point. It is important to have the proper water-to-coolant ratio for proper cooling operation. Refer to your vehicle’s owner’s manual to learn the proper coolant concentration recommended for your make and model car or truck. If you don’t have your owners’ manual, look online for a replacement copy. You can download one for free by visiting your vehicle’s manufacturer website.

Cooling System Leaks

If your cooling system has only, it will also cause your car to overheat. Common spots for leaks include hoses, radiator, thermostat housing, head gasket, heater core, water pump, cylinder heads and block, automatic transmission oil cooler, and freeze plugs.

Obstructed Coolant Lines

When the flow of radiator fluid is obstructed, it can’t do its job. Things like rust, sediment, and dirt can block cooling system lines entirely, or decrease their flow. This of course eliminates the vehicle’s ability to control the temperature of the engine. The solution to this problem would be a routine coolant flush and fill.

Faulty Thermostat

If your car has a bad thermostat, it can prevent the flow of coolant. The thermostat is a heat-sensitive valve that opens and closes in response to the temperature of the engine. If it gets stuck in the closed position, the cooling is blocked from passing through and doing its job.

Defective Radiator

When a radiator is not working properly, it can also cause a car engine to the heat. That is because the radiator is where coolant temperature is reduced. When the radiator is defective, and cannot cool down the fluid, thus causing the engine to get too hot. Leaks and clock for the most common radiator problems.

Additional Causes:

Faulty Water Pump
Loose Fan Belt
Broken Fan Belt
Defective Radiator Fan
Worn Hoses
Burst Hoses
Low Coolant

Unexpected Car Engine Troubles?

Zore's Towing Indianapolis 317-247-8484

Zore’s Towing Indianapolis 317-247-8484

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