What does a mass airflow sensor consist of?Ī mass airflow sensor consists of a case which is positioned between the air filter and air pipe. The mass airflow sensor plays an integral part in the reduction of exhaust and air supply. In order to regulate the correct proportion of fuel and air in any operational condition, the engine control unit requires the exact information concerning the intake of the air mass. The combustion engine requires 14,7 kg of air for the optimal combustion of 1kg of fuel. The data is then sent to the control unit in order to specify the injection rate of the fuel. The mass airflow sensor measures the air mass, which flows through the air filter to the engine. Why does my car need a mass airflow sensor?
Regularly replacing the air filters helps to extend the durability of the mass airflow sensor. A faulty or damaged mass airflow sensor sends the wrong input signal to the electronic control unit which in turn wrongly activates other components.
Oil particles from oil covered sports air filters may damage the sensor.
Environmental conditions (rain, splash water…), sand, dust, road salt, vibrations, oil and so on affect the efficient readings of the mass airflow sensor. The hot film meter inside the mass airflow sensor is very susceptible and can be easily contaminated by dirty and oil. Mass airflow sensors are extremely sensitive replacement parts. Only car garages are capable of conducting distinct fault diagnoses and reading out the error messages. Faulty tank ventilation valves among other things.
Defect exhaust gas recirculation valves.Other causes may be possible why an intact mass airflow sensor may indicate wrong signals: The vehicle indicates errors such as erratic engine operation, reduced performance, increased petrol consumption and engine cutout. How do I know that my mass airflow sensor is faulty?
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