Thereâs nothing wrong with driving your car in the summer as long as youâre comfy in it with the AC on. However, one problem that may occur is the overheating of the vehicle while the AC is on. Youâd want to know the reason for that bummer, wouldnât you? Finding a solution would come to mind if you eventually discover the root of the problem. This is where the information contained in this guide comes in. I. Car overheats when the AC is on: What are the symptoms?1. Temperature gaugeYour car may be equipped with either a coolant temperature gauge or a warning temperature lamp. Monitor the former so it doesnât go beyond 110 c. If so, then your car is overheating. Both components will come on as a warning signal if thereâs an unusual increase in engine coolant temperature. Check for coolant leaks regularly to ensure that either of the two components works as intended. 2. Car feeling physically hotIf your car is abnormally hot and you can smell rubber or plastic burning, it could mean that it has overheated. The smell could be a sign of plastics and gasket melting. 3. Ticking sounds from the engine compartmentIf engine oil is utilized beyond the recommended period, it will stop being viscous. This will mean that it can no longer perform its function in the engine. Friction will start taking place due to the lumps that will be formed after such an occurrence. That could be the reason for the ticking sounds. 4. Engine shut downThis automatically happens as a precautionary measure in cars overheatedâwhether the AC is on or not. The car will only start when the temperature has gone down. 5. Strange odorYour carâs engine is mainly metallic, but it has additional rubber seals and plastic components. Therefore, an overheated engine usually has a strange, âhotâ smell. Furthermore, if you experience an unusual sweet smell, check if you have a leaking coolant situation. Look for coolant puddles on the ground after parking to be safe from leakages. 6. Speeding issuesIn most cases, an engine problem like overheating will cause acceleration issues. Your car may also feel sluggish and fail to maintain the speed limit you prefer. Expanded pistons are mainly responsible for this predicament. 7. A cloud of steamSteam emanating from under the hood is one of the most obvious signs of overheating. It may appear like smoke in some situations, but it is vapored. More often than not, steam results from evaporating coolant due to leakage. II. Five reasons why your car overheats when AC is onNow that youâve noticed the problem of overheating, what could be the cause? Well, weâre about to explain the possibilities. 1. AC compressor overloadItâs a fact that the compressor puts more load on the engine whenever the AC is on. Conduct a test by putting the AC on and observing the little boost in RPM (rotations/revolutions per minute). Automobile makers try to ensure that car cooling systems wonât trigger any problems. However, issues start to come up when the compressor seizes, and the accessory belt stops it from turning. The vehicle will keep trying to turn the compressor leading to the overheating of the engine as a result of added pressure. 2. Problem with radiatorThere 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. It can be an accumulation of substances such as rust, dirt, and so on. Leakages may also be a factor. 3. Faulty fanYour car can overheat when the AC is on, and youâre stuck in traffic or driving slowly. The problem is triggered when the cooling fan (including the cooling motor, fan clutch, or any other component that makes the cooling fan work) has a defect. For example, the fan moves at diverse speeds depending on the load needed to cool the engine (your car may have two fans). The motor wonât receive adequate cooling if the fan isnât performing as powerfully as it shouldâleading to overheating. Another instance is when there are blockages or interferences in the radiator. Such a situation can lead to the restricted passage of coolant through to the vehicleâs engine, damaging the fan switch. Apart from the above scenarios, a faulty fan relay can also be a possible factor. Itâs obvious that thereâs a need to perform maintenance checks on the cooling fan regularly. 4. Incompetent cooling systemProceed to examine the other parts of the cooling system after youâve checked the cooling fan and found nothing wrong with it⦠The condenser converts cooling gas from its gaseous form to a liquefied state. It performs this primary role well as long as blockages donât restrict the flow in the radiator. We discussed the radiator earlier. You can see how itâs an important part of the system in the prevention of overheating. Back to the condenserâit heats up when the AC is working. This is why thereâs a need for a cooling system to keep the condenserâs temperature at an optimal level. The cooling system needs to be performing as well as it should at all times. Overheating can also be caused by a faulty water pump when the AC is on. A malfunctioning water pump will give rise to inadequate heat depletion. 5. Defective engine coolant sensorThe engine coolant sensor signals the control module to switch the cooling fans on, so this device may be the cause In case, after diagnosis, you still cannot find out the causes of this situation and things get even more complicated, you should scan for trouble codes related to your AC system using an using an OBD2 scan tool. Hopefully, it will help you discover the root of the issue. III. Quick solutions to fix the problem:Implement the tips below depending on your discovery. 1. Clean Your RadiatorClean the radiator to get rid of blockages and interferences that will limit airflow and coolant passage. It should also be inspected for leakages with the aid of a radiator testing kit. Clamps and hoses should be substituted with new ones if needed. 2. Install an Air Pressure GaugeThe installation of an air pressure gauge is necessary to monitor the flow of air. It can be fixed at any of the radiator ends. 3. Flush the Coolant SystemYou should find out if this is what your car needs when it has overheated. Do this to make way for a new coolant mixture. Youâd also be trying to get rid of corrosive substances, salts, dirt, rust, and so on. 4. Change the Coolant Mixture Every 2 YearsYou can do this at every 40,000 km covered. Ensure that you do so with a recommended productâin the right concentration. You should steer clear of tap water (use distilled water) because of the corrosive substances and salts that it may have. Doing these will prevent corrosion and rust in the radiator, water pump, and internal parts of the engine. Important Notice: Use the right coolant. 5. Add Water to the RadiatorThe radiator shouldnât be dry, so ensure that water is added to it. IV. What to do if a car overheats with AC on in traffic?This could be a real bummer. Aaargh! Still, try to keep calm and follow the tips below. Step 1: Pull Over as Soon as PossibleThis is the very first step that you should take. Ensure that the conditions are right before doing so. Remember, safety first. Step 2: Turn Off the Car Air ConditionerThis should be done immediately, especially when you realize that thereâs no chance to pull over. Confirm that itâs safe to set the vehicle in park or neutral when you have to wait for a stoplight. Itâs a way to reduce the temperature of the engine a little. Step 3: Open the Hood of Your CarAs stated earlier, safety first. Be sure that itâs OK to do this because of the temperature of the hood. Therefore, play safe by checking to see if steam is escaping from under it. If so, be patient for a while. Opening the hood will greatly reduce the temperature of the engine. Step 4: Turn Off the Car Engine but Keep the Key in the Ignition and as it should be on ModeSet the vehicle on park and put off the engine if youâre able to pull over successfully. The fan will continue running (in some car models) as long as you leave the key in on Mode. Substitute the fan with a new one if you discover that it isnât on. This could also mean that itâs linked to the overheating problem. Step 5: Check for Any LeakagesOnce the engine has cooled down, proceed to check for leaks and/or call an expert for help. Patch up any leaks you find with radiator hose tape or by tightening a clamp. Fill up the radiator with coolant and water after. The expert you called should do a complete check to discover everything that went wrong with the engine. V. Final ThoughtsYour carâs cooling system should be included in the periodic checks carried out on the vehicle. Ensure that you hire an expert to do so. The best decision to make would be to call a professional for help when the vehicle overheats, especially when youâre not sure about what to do. Abnormal heating can cause serious engine problems which may lead to internal damage. Be observant and take the appropriate steps. Tim Miller, Author at Auto Trends Magazine Charts supplied by Tim Miller. All rights reserved. The post Car Overheats When AC is On: Symptoms, Causes and Fix Guide appeared first on Auto Trends Magazine. Car Overheats When AC is On: Symptoms, Causes and Fix Guide published first on https://medium.com/@JacobsLowPriceAutoGlass via Tumblr Car Overheats When AC is On: Symptoms, Causes and Fix Guide
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