More and more drivers are trying to maintain their vehicles on their own. This outcomes in substantial cost savings because contemporary cars involve more and more routine service and are done up of more and more technical components that result in new breakdowns or inconveniences. One of the problems that disturbs more and more Bmw Serie 3 E90 owners is a clogged air flow meter, which will lead to a loss of power and black exhaust gases. Today we are going to look at how to clean the mass air flow sensor of your Bmw Serie 3 E90? . First, we will describe how your mass airflow sensor operates and its advantages, second, why it may be important to clean this sensor , and finally, how to clean the mass air flow sensor of a Bmw Serie 3 E90 .

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Utility and action of the mass air flow meter of a Bmw Serie 3 E90

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So we start our article with the process and aim of your Bmw Serie 3 E90 flowmeter.

The aim of the mass air flow sensor on Bmw Serie 3 E90

The mass air flow sensor is a component that has been developed actually quite not too long ago and principally equipped on diesel models. In truth, with injection engines, the fuel and air intake has become very precise and it is consequently necessary for the ECU to know the exact volume of air added into the engine to adapt the behaviour of complementary intake parts such as the injection or the EGR valve, if you have problems with the EGR valve on your Bmw Serie 3 E90, do not think twice to seek advice from our article on this subject.

Mass air flow sensor operation on Bmw Serie 3 E90

Now, we are going to examine how it operates, before trying to clean the mass air flow sensor of your Bmw Serie 3 E90 , you must already understand how it works to do this routine service work properly.

The mass air flow sensor is therefore principally there to obtain statistics on the air intake of your motor vehicle. To do this, it must be mounted just after the air intake of your Bmw Serie 3 E90, i. e. just after the air filter. It is a pipe equipped with a sensor that will analyze the air in the intake and transmit the statistics to the ECU of your car.

Why clean the mass air flow sensor of a Bmw Serie 3 E90?

The mass air flow sensor of your Bmw Serie 3 E90 can have problems and this is what we will try to discover and figure out what problems you may be struggling with!

Mass air flow sensor problems Bmw Serie 3 E90

Here are the different problems that the air flow sensor of your Bmw Serie 3 E90 can cause:

  • higher fuel consumption: Because a dirty flow meter will necessarily bring about more significant fuel consumption due to poor air flow…
  • Power loss: Related to similar problem, this lack of air can cause a loss of power to your engine.
  • Difficulties starting the vehicle: Finally, one of the last classic problems associated with a dirty flowmeter will be that your Bmw Serie 3 E90 will have more difficulties to start the vehicle.

How do I clean the mass air flow sensor from a Bmw Serie 3 E90?

After examining the operation and problems that the flowmeter can cause, we will look at how to resolve these problems by describing to you how to clean the mass air flow sensor of your Bmw Serie 3 E90 . You should know that this procedure is actually quite basic to accomplish and you will not need advanced mechanical skills to do it yourself, a good method to avoid a trip to the garage and a steep bill. See down below the different steps to follow to accomplish this routine service act:

  • After having located the mass air flow sensor of your Bmw Serie 3 E90 , you will have to dismantle it. To do this, work gently, but you will just have to disassemble it on both sides of the air duct and disconnect the electrical plug on top of it.
  • Once disassembled, you will be able to move forward to the step cleaning the mass air flow sensor of your Bmw Serie 3 E90 . This sensor will, as time passes, get dirty and its two “filaments” that will give information to your computer on the quality and temperature of the air will no longer be able to collect data properly, it is in this sense that it will disturb the operation of the engine of your Bmw Serie 3 E90. The aim of this cleaning will be to take out all its impurities to allow it to work efficiently again.
  • Let soak the lower part 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
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  • Now we’ll proceed to the very delicate cleaning of the flow meter filaments. You have to be very cautious, in any other case your mass air flow sensor will be permanently broken. With the help of a fine brush and solvent, gently clean the two filaments of your mass air flow sensor . If you are too afraid of damaging it, you can as well clean them with a brake fluid in the form of an aerosol by spraying the jet on these filaments.

Now you know how to clean the mass air flow sensor of your Bmw Serie 3 E90 , you should feel a noticeable difference in the behavior of your engine.

If perhaps you have any further questions about the Bmw Serie 3 E90, do not hesitate to consult our Bmw Serie 3 E90 category.