What are the symptoms of a faulty car air conditioning temperature sensor?
1 Answers
The specific symptoms of a faulty car temperature sensor are as follows: 1. Intake air temperature sensor: If the intake air temperature sensor malfunctions or is damaged, the engine will not be able to accurately calculate the fuel injection amount, resulting in a mixture that is either too rich or too lean. The car may experience difficulties starting, unstable idling, shaking, or black smoke emissions, affecting engine performance. 2. Coolant temperature sensor: If the coolant temperature sensor malfunctions or is damaged, the engine will not be able to regulate the water temperature in time, leading to insufficient cooling. This can easily cause overheating or cylinder scuffing. Symptoms include difficulties starting when cold, unstable idling, shaking, and weak acceleration. 3. Inspection of the outside temperature sensor: The outside temperature sensor, also known as the ambient temperature sensor, is usually installed near the front bumper or grille. Its sensing element uses a negative temperature coefficient thermistor. The inspection method for the outside temperature sensor is the same as that for the coolant temperature sensor. You can use a multimeter's resistance setting to measure its resistance value. At room temperature, the resistance should be 1.6-1.8KΩ, and the resistance increases as the temperature decreases.
