The mass air flow sensor is essential for dependable and effective engine performance. The sensor will ultimately stop working because of the tiny residue that the air passing by it leaves behind.
You could be tempted to try something you already have at home, such as WD-40, brake cleaner, or a comparable substance, since the specialist MAF sensor cleaning looks like an extra investment.
As the mass air flow sensor is so delicate, there is no other way to clean it. Use just the items that are designed for this use.
Reasons Why You Should Not Use MAF Sensor Cleaner Alternatives
You came to this post seeking alternatives to the mass air flow sensor that you now have, but I am here to tell you not to use any of them. While numerous articles propose several common cleansers, utilizing them ensures sensor failure.
Investing $50 to $150 on a new mass air flow sensor is preferable to spending $10 on a cleaning.
While WD-40 and brake cleaners may remove dirt from the MAF sensor, they leave a coating of residue on the hot wire, exacerbating the issue. Theoretically, the residue insulates the wire, making cooling more difficult. A lean mixture will ensue because the computer will modify the fuel injection, thinking less air is moving.
The sensor wire’s sensitivity is the second issue. Degreasers and cleansers for brakes are powerful chemical substances that might harm the sensor. Grease from the skin may be transferred to the sensor only by touching it, which will reduce its accuracy.
An electronics cleaner is the only solution that could work, but I would not take that chance. Considering how reasonably priced the MAF sensor cleaning is, there is no purpose in purchasing a different spray.
How a MAF Sensor Works
The mass air flow sensor is located in the intake system between the throttle body or the air filter. If you follow the air pipe from the filter, you may discover the plug jutting out with a wire harness connected. The portion of the hose with the added particle filter is known as a MAF sensor housing.
The sensor’s clever construction allows it to calculate how much air is moving toward the engine. It has a hot wire heated by electricity and strives to maintain a steady temperature.
As you accelerate or gain speed, more air will flow through the car, cooling the wire. Extra current will be routed to the hot wire to maintain a consistent temperature. The vehicle’s computer can determine how much air is moving into the engine by examining the electrical current and then modifying the fuel injection appropriately.
Faster throttle response and improved fuel efficiency are the main advantages of the MAF sensor since the computer can immediately alter the air-fuel mixture depending on the data given.
Signs Of A Faulty MAF Sensor
There will be a lot of issues with the engine due to the particle buildup on the MAF sensor. You might exhibit signs of poor fuel compression or general fuel-related problems.
The engine will be challenging to start and can stall during the first few seconds of operation. The driving experience will seem strange if you press the gas pedal too quickly.
You can notice a gas smell or engine hitches since the engine will run lean or rich depending on how the sensor responds.
Cleaning a MAF Sensor
Cleaning the MAF sensor takes just five minutes, not including the drying time. You will likely not need further equipment than a screwdriver and a MAF sensor cleaning.
The wire harness has to be disconnected first. If feasible, remove it with the housing; if not, remove the sensor by unscrewing it. Do not touch the sensor in any way, and wear gloves.
Spray the sensor after vigorously shaking the MAF cleaner. Spraying through the filter will force dirt toward the sensor if you have removed it along with the housing. You may clean both components by spraying from the other side. Repeat many times for thoroughness.
The sensor’s top has an arrow pointing in the direction it should face, but before reinstalling it, let it 10 to 20 minutes to dry. Use these procedures to replace the sensor if the cleaning is unsuccessful; again, avoid touching the delicate parts.
FAQs
What other cleaning methods are there for mass air flow sensors?
While several written and video DIY tutorials are available, I suggest only utilizing a MAF sensor cleaning. Some folks use cotton buds and acetone. The assertion that acetone leaves no trace cannot be said about cotton buds, which may include fibers. However, although the spray can enter from all sides, this procedure can only clean the sensor to a limited degree.
Can an electrical cleaner be used to clean a MAF sensor?
Oil may be included in electrical cleansers to shield electrical connections, which is bad for the MAF sensor.
Can I use fuel to clean a MAF sensor?
Since petrol is corrosive, it is conceivable that it may harm the delicate substance that makes up the sensor.
Does cleaning a MAF sensor make sense?
It would be best if you always tried cleaning the sensor before replacing it since it is so simple and reasonably priced. In contrast to aftermarket sensors, which start at $50, cleaning solution cans are just $5 to $10.
Does a MAF sensor’s performance increase after cleaning it?
Indeed, cleaning the MAF sensor will significantly improve performance, particularly if it has become dusty. The computer uses the sensor to adjust the air-fuel mixture for the best performance.
Summary
VehicleFreak is on a mission to provide low-cost, straightforward DIY repairs for your car as long as they are functional and safe. Although isopropyl alcohol, acetone, or electronics cleaner may be effective in certain situations, there are many instances when the automobile works well for one or two days before shutting down and needing a new MAF sensor.
By avoiding a visit to the technician, you will already have saved a lot, so use a MAF sensor cleaning and do the work effectively.