![]() The computer mistakenly assumes the engine is cold, even when it is not. It is also common for a coolant temperature sensor to fail without warning and send permanently cold signals to the computer. And the response of the computer may unbalance the timing and fuel calculations. If the coolant temperature sensor malfunctions, it can transmit a false signal to the computer. Poor fuel economy is another symptom that indicates your coolant temperature sensor is malfunctioning. This causes the computer to erroneously counterbalance the signal, thereby causing the engine to misfire or overheat. At times, the coolant temperature switch may fail such that it starts transmitting hot signals permanently. If you notice that your engine overheats, the coolant temperature sensor could be the problem. Symptoms of a Bad Coolant Temperature Sensor Overheating Engine These symptoms should alert you of potential problems with your automobile and push you to have it checked out thoroughly. This post discusses some of the common symptoms of a bad coolant temperature sensor. And this implies that if the coolant temperature sensor malfunctions, it may translate very quickly to engine performance hiccups. This occurs to prevent overheating, which can damage the engine severely.Īs you can see, temperature plays such a crucial role in the performance calculations of your engine. If the computer detects that the engine’s temperature is too high, it will automatically scale back engine performance settings. Most automobile engines require more fuel when they are cold but require less when fully warmed up. This includes changing the engine’s timing as well as the fuel calculations for premium performance. The signal generated is automatically transmitted to the computer so that necessary changes can be made. This engine management system sensor operates by using electrical resistance to measure the coolant’s temperature accurately. The coolant temperature switch – otherwise known as the coolant temperature sensor – is primarily responsible for monitoring the engine coolant’s temperature. The more the input readings, the better the output decisions are.A coolant temperature sensor remains one of the most vital engine management sensors. One ECT sensor might not be as much reliable to operate the fan efficiently. This secondary ECT Sensor works together with the primary ECT Sensor to optimize the working of the car and give an accurate reading of the coolant to the car ECU before it is heated up, saving it from potential overheating problems.Īdding an ECT sensor is another way to get a more accurate reading. To keep the radiator of the engine working properly and to regulate the temperature of the engine constantly, locating these leakages is also very important. However, the one location where the secondary ECT Sensor is seldom placed in the radiator is the outlet of the radiator tank or pipe as it is the most common place for leakage of the engine coolant fluid. The location of this sensor is not very common and is found in different locations in different cars. The other Engine Coolant Temperature Sensor is known as the secondary ECT sensor or the ECT sensor 2. This cylinder head closes the top opening of the cylinders and packs it into a casing forming a combustion chamber for the fuel and air to mix and react. In an internal combustion car’s engine, the cylinder head is placed on the top of the car’s cylinders above the cylinder block. This sensor is located on the coolant passage next to or in the thermostat housing of the cylinder block or cylinder head. ![]() The main Engine Coolant Temperature Sensor is known as the primary ECT sensor or ECT sensor 1. One sensor is located near the thermostat valve housing, and the second one is located in the radiator outlet tank or pipe. The pair sensors can be installed in different places, depending on the make, model, and year. Most of the cars that are being used nowadays contain pairs of Engine Coolant Temperature (ECT) Sensors for the purpose of sending accurate and precise information to the car ECU. These sensors are directly connected to the car ECU for measuring the temperature of the engine coolant. This sensor consists of wires ranging from 1 to 4. But modern cars, have coolant temperature sensors placed next to the thermostat housing, which is directly connected to the car ECU. ![]()
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