how to reset mass air flow sensor bmw

This is very important if you have just used the car. How to Reset the Mass Air Flow Sensor.

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Start engine and warm it up to normal operating temperature.

. Put your multimeter in Volts DC mode V and connect one probe of the multimeter to a good ground point on your car like the metal frame or engine block if you cant find any suitable metal parts use a plastic cover for instance. Erase the DTC memory. The most common signs of bad mass air flow sensor MAF in BMW X1 are loss of power or slow acceleration engine hesitation or jerking during acceleration erratic idling misfires poor exhaust emission values and sometimes black smoke comes out of the tailpipe.

Connect the second probe of the multimeter to the black wire of the Mass Airflow Sensor. Intake manifold flap actuator. Position the MAF sensor on the throttle body.

CRC MAF Mass Air Flow Sensor Cleaner. The sensor itself is located near the air filter housing on the drivers side of the engine. The mass airflow sensor is held in place with two screws and is very straightforward to replace.

The mass air flow sensor is part of the engines intake system and is located. Use a flathead screwdriver to unfasten the air intake hose clamp at the throttle body. Find the location of the MAF sensor in your X3 it will be somewhere between the air filter box and the throttle body.

Changing BMW Mass Air Flow Sensor yourself manuals and video tutorials. Returning learned values of the intake system to the initial state. Code 3263 oxygen sensor.

Turn ignition switch OFF. After the engine cools down you can go to the mass air flow sensor location and remove the connector from the sensors harness. The transformation was remarkable - the engine seemed to pull with.

Helpful guides and tips on replacing BMW Mass Air Flow Sensor. Remove the MAF sensor from the throttle body. This guide provides instructions on how to change the Mass Air Flow MAF sensor on a 2004-2013 BMW 3-Series.

I bought a 2004 X3 recently and even though the Check Engine light was not on I did buy a can of Mass Air Flow sensor cleaner and cleaned the MAF. If stuck use a small flathead screwdriver to gently lever it out of the duct. Tighten the mounting screws to 27 in lb 3 Nm.

Remove the sensor from the intake air duct. When you change a MAF sensor you need to disconnect the battery for about 10 minutes so the computer forgets the learned parameters and resets to the factory parameters. Perform this coding also after removing the leak on the intake system.

Only show this user. Spray at least 10 spurts of MAF cleaner onto the sensor and then let it air. Ratio of calculated to measured air mass too high.

These guidelines apply to BMW E90 E91 E92 and E93 vehicles. How do you reset a mass air flow sensor. We sell oem air mass sensors air flow meters and hfms hot film meter.

Disconnect mass air flow sensor harness connector. The PCM detects that the actual MAF sensor frequency signal is not within a predetermined range of the calculated MAF value for more than 40 seconds. Intercooling of charge air.

Make Model Car parts category Find. Figure 9 Working in the engine compartment loosen air flow meter clamp green arrow then disconnect the air duct from air flow meter by pulling straight off air flow meter. BMW Diagnostics with ISTA - How to reset mass air flow MAF adaptation values with ISTA DThe information contained on this video are for educational and info.

To Check if Air-Mass has been reset Select Air-Mass Flow Sensor Adjustment again and Stored information should be 00 as above To exit Select NO Error Resetting Air-Mass Fig14 If Error occurs as above please report this number to Launch so we can add this new system. The mass air flow sensor or MAF sensor is part of the intake system in BMW X3 responsible for measuring the amount of air entering the engine. But if you let the car idle instead then the mass air flow sensor should reset.

Disconnecting MAF sensors. Install a new mass air flow sensor into the air filter housing. Remove the two T20 Torx fasteners from the mass air flow sensor green arrows.

Cleaning dirty MAF sensor in BMW X3. How to change Mass Air Flow Sensor on your BMW car yourself. Remove the sensor from the housing.

Stop engine and reconnect mass air flow sensor harness connector. There is a sensor on the air intake called the mass air flow sensor. Next disconnect air flow meter electrical connector by pressing wire clip purple arrow and pulling it straight off.

Remove the MAF sensor mounting screws. Just double checked on my BMW system hex code would be 3ff0 air-mass flow sensor. The following learned values will return to the initial state.

Use q-tip or MAF cleaner soaked paper towel to gently clean exposed wire sensor. When the battery is removed all MAF sensors will be reset in about 10 to 15minutes time. Let soak the lower section of your mass air flow sensor not the plug part in acetone or another solvent for a few minutes which will take out most of the grime.

Httpsamznto2KqcW0BIn BMW terminology - Hot Film Air Mass Meter - which is also known as a MAF or mass air flow s. Then it goes into learn mode and may take a little while before it learns all the parameters of the new MAF sensor. Vehicle may idle rough and stall.

Intake manifold flap actuator. Remove the clips securing the air filter housing and lift out the air intake tube. You now have to take the MAF out to clean it.

Disconnect the mass air flow MAF sensor electrical connector. Restart engine and let it idle for at least 5 seconds. Install the MAF sensor mounting screws.

Disconnect mass air flow sensor harness connector. 12 people found this helpful. Then unclip the two spring clips green arrows that hold the mass air flow sensor.

First to cool your cars engine down you need to turn it off. The engine still drove like it was a bit breathless so I bit the bullet and bought a brand new MAF sensor. Unplug the electrical connector.

Connect the mass air flow MAF sensor electrical connector. The stored compensation factors are reset to 0 in the process.

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