It can be an accumulation of substances such as rust, dirt, and so on. There can be blockages or interferences in the internal pipes of the radiator, which can negatively affect the flow of coolant and air in it, thereby causing overheating. The vehicle will keep trying to turn the compressor leading to the overheating of the engine as a result of added pressure. However, issues start to come up when the compressor seizes, and the accessory belt stops it from turning. Conduct a test by putting the AC on and observing the little boost in RPM (rotations/revolutions per minute).Īutomobile makers try to ensure that car cooling systems won’t trigger any problems. It’s a fact that the compressor puts more load on the engine whenever the AC is on. Five most common causes of car overheating when AC is on. Now that you’ve noticed the problem of overheating, what could be the cause? Well, we’re about to explain the possibilities. Five Reasons Why Your Car Overheats When AC Is On More often than not, steam results from evaporating coolant due to leakage. It may appear like smoke in some situations, but it is vapored. Steam emanating from under the hood is one of the most obvious signs of overheating. Expanded pistons are mainly responsible for this predicament.

Your car may also feel sluggish and fail to maintain the speed limit you prefer. In most cases, an engine problem like overheating will cause acceleration issues. Look for coolant puddles on the ground after parking to be safe from leakages. Therefore, an overheated engine usually has a strange, ‘hot’ smell.įurthermore, if you experience an unusual sweet smell, check if you have a leaking coolant situation. Your car’s engine is mainly metallic, but it has additional rubber seals and plastic components. The car will only start when the temperature has gone down. This automatically happens as a precautionary measure in cars overheated-whether the AC is on or not. See Also – 5 Causes of Engine Ticking Noise 4. That could be the reason for the ticking sounds. Friction will start taking place due to the lumps that will be formed after such an occurrence. This will mean that it can no longer perform its function in the engine. If engine oil is utilized beyond the recommended period, it will stop being viscous. Ticking sounds from the engine compartment The smell could be a sign of plastics and gasket melting. If your car is abnormally hot and you can smell rubber or plastic burning, it could mean that it has overheated. Check for coolant leaks regularly to ensure that either of the two components works as intended. If so, then your car is overheating.īoth components will come on as a warning signal if there’s an unusual increase in engine coolant temperature. Monitor the former so it doesn’t go beyond 110 c. Your car may be equipped with either a coolant temperature gauge or a warning temperature lamp. Step 4: Turn Off the Car Engine but Keep the Key in the Ignition and as it should be on ModeĬar Overheats When the AC Is On: What Are the Symptoms? There are seven common signs that can tell you your car is overheating with the AC on.Step 2: Turn Off the Car Air Conditioner.What To Do if a Car Overheats With AC on in Traffic?.Five Reasons Why Your Car Overheats When AC Is On.Car Overheats When the AC Is On: What Are the Symptoms?.

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