The fan could be broken, or there could be a blockage in the fins, radiator, and condenser. This problem is caused when there is a lack of airflow through the radiator and condenser. When the car gets overheated at slow speeds or a stop, the likely culprit is the engine fan. Taking a look at the radiator and condenser may help you figure out why things aren’t functioning improperly. This clogging can cause the refrigerant and the coolant not to flow properly, causing parts to heat up and, eventually, engine overheating. Liquid passes through the tubes, and corrosion or particles can cause clogged areas. If the condenser gets too hot, it can lead to the engine overheating.Īnother reason the engine can overheat is when the radiator and condenser tubes get clogged over time. If the fins are clogged, the condenser temperature will rise. Inefficient Working of the Cooling SystemĪs the AC system moves refrigerant to the condenser, the engine fan blows over the condenser fins to regulate temperature. The AC compressor might have added an extra rotational load to the engine, so the first thing to check is your engine overheats.Ģ. If the AC compressor doesn’t turn as well as it is used to, the load on the engine is too much, creating excess heat. This created a load (pressure carried) on the engine. When the AC is on, the compressor needs to work like an engine, moving its cylinders to compress the refrigerant. The main reason is most likely the AC compressor. Just carrying extra water to put in the radiator when the engine gets hot is going likely to lead to engine failure. The engine has to work harder to create higher temperatures (if the AC compressor is bad), and the AC system creates heat that the condenser or water pump can’t cool, also creating higher temperatures.īe sure to turn off the AC if you suspect a problem and try to get it fixed as soon as possible. A car’s engine can begin to heat up quickly because heat is created in different ways as soon as the AC is on. If overheating happens only when the AC is on, you’ll be fairly sure that you need to check the AC compressor, the condenser, and the water pump.
An overheating engine is an important issue to resolve the first time it happens, or expensive damage could occur, taking time and patience to fix. This problem is faced by many others who have gone through this same issue with their car. If you have this problem, you are not alone. If the AC compressor is not working well, the engine must work harder, making it overheat. Another reason for overheating is when the AC condenser is not working properly, or the water pump creates excess heat. Sounds familiar?Ĭars can overheat when the AC is on because the serpentine belt that turns the AC compressor also connects to many other engine parts, including the power steering pump, water pump, crankshaft, radiator fan, and alternator. You ignore this initially, thinking things will start to get cooler, but the problem persists, and finally, you notice that the car is starting to overheat, but only when the AC is on. When you are sitting in your car with the AC on, you suddenly notice that the interior of the car starts to feel warm.
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