![]() This includes changing the engine’s timing as well as the fuel calculations for premium performance. Most automobile engines require more fuel when they are cold but require less when fully warmed up. If the computer detects that the engine’s temperature is too high, it will automatically scale back engine performance settings. 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. This post discusses some of the common symptoms of a bad coolant temperature sensor.Īnd this implies that if the coolant temperature sensor malfunctions, it may translate very quickly to engine performance hiccups. 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. If you notice that your engine overheats, the coolant temperature sensor could be the problem. ![]() At times, the coolant temperature switch may fail such that it starts transmitting hot signals permanently. This causes the computer to erroneously counterbalance the signal, thereby causing the engine to misfire or overheat. Poor fuel economy is another symptom that indicates your coolant temperature sensor is malfunctioning. ![]() If the coolant temperature sensor malfunctions, it can transmit a false signal to the computer. ![]() And the response of the computer may unbalance the timing and fuel calculations. It is also common for a coolant temperature sensor to fail without warning and send permanently cold signals to the computer. ![]() The computer mistakenly assumes the engine is cold, even when it is not. ![]()
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