Thursday, 16 March 2017

Engine temperature sensor

What does the engine coolant temperature sensor do? How do you replace the engine temperature sensor? The engine temperature sensor is a type of sensor that changes its resistance with temperature.


Many critical engine functions such as selection of air-fuel ratio, fuel injection timing, ignition timing etc. The sensor works with the vehicle’s ECU, continually monitoring the coolant temperature to make sure the engine is running at the optimum temperature.

ECT sensor is connected to the engine computer or PCM. An engine coolant temperature sensor or ECT measures the temperature of the liquid coolant. A typical engine cooling temperature sensor is a Negative Temperature Coefficient (NTC) thermistor , which means its electrical resistance decreases when the temperature increases. Coolant temperature sensor or engine temperature sensor serves to take engine’s temperature. As a rule, sensor is a thermistor – an electronic component resistance of which reduces when temperature rises.


Resistance can be easily measured and on the basis of it you can determine and display temperature. The engine coolant temperature sensor is temperature-variable resistor , which usually has a negative temperature coefficient. It is a two-wire thermistor immersed in coolant and measures its temperature.

The onboard computer uses the signal of ECT as the main correction factor when calculating the ignition advance and the injection duration. The readings produced from the coolant temperature sensor are transmitted to the engine control unit , where they are utilized as data for regulating and maintaining the proper ignition time and the optimal fuel injection through the computerized approach. It is usually placed on the right side of your vehicle adjacent to the radiator. The coolant temperature sensor, also known as the coolant temperature switch, is an engine management system sensor that is used to monitor the temperature of the engine’s coolant. Most coolant temperature sensors operate using electrical resistance to measure the temperature of the coolant.


For small or special purpose engines, cooling using air from the atmosphere makes for a lightweight and relatively simple system. Due to coolant temperature sensor driver always knows what is the temperature of the engine. It is very important to prevent overheating. The temperature is then sent to the on-board control system.


From there, your vehicle’s computer will use this temperature information to either continue operating or adjust certain engine functions, always working to keep the engine temperature at an ideal level. Depending on the sensor information, the control unit adapts the injection time and firing angle to the operating conditions. The sensor is a temperature sensor with a negative temperature coefficient. Fits Esprit and Lotus Carlton. The information received from the coolant temperature sensor is then used to regulate the temperature of the vehicle’s engine.


On certain models of vehicles, this engine temperature light may be green. If you’re experiencing problems with the engine temperature light coming on, but it’s not overheating, the likely cause is a faulty sensor.

A sensor is used to constantly monitor engine coolant. Orange Cycle Parts. This will then translate to how the engine runs. Before the automated systems in vehicles, this was the sole purpose of the temperature sensor.


A faulty sensor will mean the engine may not start, or there may be problems starting it. Consequently, Its readings play a key role in calculations which affect engine performance. Helping to ensure less fuel is supplied when the engine is warm or more when the engine is cold. HAAS Temperature Sensor at the lowest UK prices from Euro Car Parts UK’s No.


The sensor unit allows a current, varying with the engine temperature , through to a heater coil inside the gauge. A bi-metallic strip inside the coil bends by an amount depending on the size of the current and deflects the needle across a calibrated scale to give a temperature reading. Engine Sensors - MGF.


The most commonly sought-after engine management sensors include air mass meters, knock sensors, lambda sensors and ignition coils, but you can also find high quality wheel speed sensors, crankshaft sensors, vacuum sensors and yaw sensors should you require them.

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