If you keep experiencing this engine stalling problem, try to get your vehicle to the nearest auto mechanic before you cannot start your engine at all. This will prompt you to have to start your engine again. However, shortly after you begin driving the vehicle, the engine may stall at some unexpected moment. You may start your vehicle, and everything will seem fine. If it does, then you probably have a bad mass air flow sensor to worry about. Watch the tachometer on your dashboard and see if your RPM speed fluctuates rapidly in an idle position. This will cause the engine to experience rough idling whenever you park or stop the vehicle. As a result, the engine control unit won’t know the proper amount of fuel to have injected into the cylinders. When the mass air flow sensor is bad, the engine control unit will not receive any information from it. Related: Symptoms of a Bad MAP Sensor #1 – Rough Idling Some of these symptoms can be caused by other problems with the vehicle.īut if you notice at least two or three of these symptoms happening at the same time, you can probably pinpoint the problem directly on MAF sensor that’s not working correctly.

To help you catch this problem early on, here are five of the most common signs of a faulty mass air flow sensor that you can watch out for. If the information is incorrect, then an incorrect amount of fuel will be put into the engine causing it to run either too lean or too rich. Remember, the engine control unit needs the correct mass air flow information to know how much fuel to put into the engine cylinders. This will jeopardize the entire internal combustion process because the engine won’t receive the proper amount of fuel from the injectors. If your mass air flow sensor ever goes bad or malfunctions for some reason, it will send the wrong information about the airflow mass to the engine control unit.

See Also: Code P0101, Code P0102, Code P0103 Top 5 Bad MAF Sensor Symptoms You see how all these components work together like this? This balances the air and fuel ratio to promote successful combustion.

Once the air flow mass is calculated, the sensor sends this information to the engine control module.įrom there, the unit can correctly tell the fuel injectors how much fuel to inject into the engine cylinders. When air from the outside enters the engine, the mass air flow sensor detects the mass of this air.

G37 mass air flow sensor problems