A temperature sensor, or engine coolant temperature sensor, is used to measure the temperature of the engine coolant of an internal combustion engine. Just like most other sensors in a car, the readings are sent to the engine control unit (ECU) or the car's computing system, which adjusts the fuel injection and ignition time accordingly. The temperature sensor is either under the front of the hood or at the bottom of a car. The outside air and location of the sensor, can affect the reading of the sensor and show temperature higher than several degrees. A good sign of a faulty temperature sensor is if your engine is overheating quickly. To replace your temperature sensors, you can easily log onto eWorldTrade through our free sign up. Connect with manufacturers that meet your requirement, inquire about the products, services and much more directly and easily. If you ever feel lost and need help, our customer support is always available. Know that we love feedback so if you have any, please let us know.