03/2003 and later E46 use the 6 pin MAF connector. The MS45 ECM gets the Intake Air temperature from the MAF, ergo the additional wiring and different connector, the earlier MS42-43 ECM uses a temp sensor in the intake manifold. Edit - extract page 10-11 Siemens Sensors for Engine Management v 2.0 Solution to this problem is placing an additional temperature sensor along with the air volume sensor. Output signal of MAF, made by BOSCH is a variable voltage in the range 1 - 5V, whose value depends on the mass of air flow through the sensor. At zero air flow (engine stopped) the sensor output voltage should be equal to 0.98V - 1.02V. Fault Code Definition. The Mass Airflow Sensor (MAF) measures the amount of air entering the engine and the Engine Control Module (ECM) uses the information to determine the proper amount of fuel quantity and ignition timing. The Mass Airflow Sensor P0102 trouble code is set when the ECM detects a low voltage output from the Mass Air flow Sensor. rmank. Should be easy. You can get a specialized MAF cleaner at an autoparts store, it just comes in a spray can like brake cleaner. Just take off and disconnect the MAF and use the spray to clean it. Spray a few times, let it dry, repeat, especially if you have an oiled air filter. Only takes around 5-10min. A bad mass airflow sensor can leave your Toyota Tacoma’s engine running rough, or even inoperable. A MAF sensor measures the density of the air entering the intake manifold. It passes this information onto your Tacoma’s ECU. The ECU uses this information along with other sensor data to control the amount of fuel that enters the combustion Bali. 25847 posts · Joined 2012. #4 · Jan 13, 2017 (Edited) I always reset DME adaptations using BMW Scanner 1.4 or INPA and clear trouble codes after replacing parts that affect the fuel or air control, such as MAF, O2 sensors, ICV, throttle body, etc. This is just a matter of course and often may not be needed. Generally, this type of sensor is supposed to last as long as the car does, but this will usually not happen. Over the years, a lot of carbon will get built up on the mass airflow sensor and make it very hard for air to pass through as intended. This reduction in air flow will only lead to issues with the vehicle not working properly. Genuine BMW Mass Air Flow Sensor (MAF) - E46 330i 330Ci, Z4 3.0i, X3 M54 3.0L. $460.99. Add to Cart. Alternative Products. Page 1 of . If the crack is large enough to cause a vacuum leak, the readings collected by the MAF sensor and the actual volume of air that enters the engine won’t match up. This could also cause some faulty MAF symptoms, even though your mass airflow sensor is perfectly fine. $272.95. Volvo Mass Air Flow Sensor 31342521. PART # 31342521. y3Ml2sG.

e46 mass air flow sensor symptoms