More and more drivers are trying to take care of their cars on their own. This outcomes in considerable savings because contemporary cars involve more and more maintenance and are done up of more and more technical parts that lead to new breakdowns or inconveniences. One of the problems that affects more and more smart forfour owners is a clogged air flow meter, which will lead to a loss of power and black exhaust fumes. In this article we are going to examine how to clean the mass air flow sensor of your smart forfour? . First, we will describe how your mass airflow sensor works and its usefulness, second, why it might be relevant to clean this sensor , and at last, how to clean the mass air flow sensor of a smart forfour .

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Utility and action of the mass air flow meter of a smart forfour

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So we start our content with the process and goal of your smart forfour flowmeter.

The goal of the mass air flow sensor on smart forfour

The mass air flow sensor is a component that has been created quite lately and mainly outfitted on diesel models. In actual fact, with injection engines, the fuel and air intake has become very precise and it is so important for the ECU to know the exact volume of air injected into the engine to change the actions of complementary intake parts such as the injection or the EGR valve, if you have problems with the EGR valve on your smart forfour, do not hesitate to consult our content on this subject.

Mass air flow sensor operation on smart forfour

Now, we are going to have a look at how it works, before trying to clean the mass air flow sensor of your smart forfour , you must already understand how it functions to achieve this maintenance work accurately.

The mass air flow sensor is consequently mainly there to obtain data on the air intake of your car. To do this, it must be fitted just after the air intake of your smart forfour, i. e. just after the air filter. It is a pipe outfitted with a sensor that will review the air in the intake and transfer the data to the ECU of your car.

Why clean the mass air flow sensor of a smart forfour?

The mass air flow sensor of your smart forfour can have problems and this is what we will try to discover and figure out what problems you might be facing!

Mass air flow sensor problems smart forfour

Here are the different problems that the air flow sensor of your smart forfour can cause:

  • higher fuel consumption: Because a dirty flow meter will necessarily result in higher fuel consumption caused by poor air flow…
  • Power loss: Associated with the same problem, this lack of air can cause a loss of power to your engine.
  • Difficulties starting the car: Finally, one of the last classic problems connected with a dirty flowmeter will be that your smart forfour will have more difficulties to start the car.

How do I clean the mass air flow sensor from a smart forfour?

After examining the operation and problems that the flowmeter can cause, we will look at how to solve these problems by showing to you how to clean the mass air flow sensor of your smart forfour . You should know that this process is quite basic to carry out and you will not need advanced mechanical expertise to do it your self, a good method to avoid a trip to the garage and a steep bill. Discover down below the different steps to stick to to carry out this maintenance act:

  • After having located the mass air flow sensor of your smart forfour , 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 smart forfour . This sensor will, with time, 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 accurately, it is in this sense that it will disturb the operation of the engine of your smart forfour. The goal of this cleaning will be to take out all its impure substances 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 gentle cleaning of the flow meter filaments. You have to be very careful, otherwise your mass air flow sensor will be permanently damaged. 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 destroying it, you can also 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 smart forfour , you should feel a noticeable difference in the behavior of your engine.

To get more tips on the smart forfour, take a look at the smart forfour category.