Expert Bmw E90 Mass Air Flow Sensor : Best Practices & 40+ Examples. This is a bosch motronic s. This is a tutorial on how to clean a maf sensor.this can be applied to almost every vehicle.
To do this, work gently, but you will just have to disassemble it on both. After having located the mass air flow sensor of your bmw serie 3 e90 , you will have to dismantle it. The mass air flow sensor monitors air flow into the engine and creates a digital signal for the dme.