![]() Drivers often notice sluggish performance, rough idling, poor acceleration or even stalling. ![]() As air, dirt and other debris gets into the sensor the parts become contaminated and fail. This measured value is required by the engine management control unit to calculate the amount of fuel required.Ĭontamination is a key reason why MAF sensors fail and require replacement. This heat flow serves as a parameter for the respective quantity of air intake by the engine. In order to compensate the constant temperature difference between resistors RT and RS again, the flow through the resistor RS has to be controlled dynamically by the electronics. The second resistor (RS) is used to record the air throughput.ĭepending on the amount of air intake, the resistor RS cools down to a greater or lesser extent. The first resistor (RT) is a temperature sensor and measures the air temperature. ![]() There are two temperature-dependent metal film resistors attached to a glass membrane arranged in the air flow. ![]()
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