The engine runs rich or lean because the sensor frequently sends reports that are either higher or lower than the actual airflow. It’s another common symptom of bad mass airflow sensor and it happens when the wire is deformed or there is a damage to the device’s electrical components. If the wire is just dirty, caused by dirt from the oil or spider webs, cleaning it will solve the issue. A change in fuel economy is the only way to detect that there are some problems with the hot wire. As a result, the engine will run rich at idle and lean when it is running. A contamination of the wire will insulate it and will not allow it work properly hence, it will send inaccurate information to the car’s computer.
Hot-wire MAF sensor is the most commonly used sensor. The car runs rich at idling or lean when running Just be alert for these common symptoms: 1. Fortunately, detecting bad MAF sensor symptoms is not rocket science. 3 Most Common Bad MAF Sensor SymptomsĪ MAF sensor needs to run properly because the ECU needs information about the amount of air in the engine.
You should be careful about bad MAF sensor symptoms because a little malfunction in this device leads to poor engine performance. Based on that piece of information, the ECU determines the amount of gas that fuel injectors need to send to each of the cylinders. It gauges the volume of air entering the engine and sends that information to the Engine Control Unit (ECU). What’s the function of the mass airflow (MAF) sensor in a car? Well, it plays a vital role in helping an automobile to maintain its fuel-air ratio.
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