Updated at: 30-03-2022 - By: Lucas

Taking the Mass Air Flow Sensor out of the equation would make a vehicle run better.

Yusuke Kohara is the author.

MAF sensors are just there to monitor the amount of air entering the engine, so that the amount of fuel may be determined. Your car’s engine is powered by the combination of fuel and air.

Occasionally, the sensor develops a flaw and begins to report inaccurate readings. The best course of action in this situation is to unplug the device.

Why would unplugging the airflow sensor make a car operate better?

The only possible explanation is that the sensor has malfunctioned, causing inaccurate readings to be recorded. By default, the Engine Control Unit (ECU) uses pre-programmed tables to determine how much gasoline needs to be given to the injectors. If you notice an increase in performance, it is likely that the sensor is the source of the problem.

If you’re unsure, it’s best to have this checked out by a professional. You can learn more about this topic by reading this article, which goes into greater detail.

As a result, let’s get started right now.

What Is The MAF Sensor?

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An engine’s fuel injection system relies heavily on an airflow sensor. As I mentioned in the introduction, the sensor measures the amount of air entering the engine from the intake side of the engine. The amount of fuel to be injected into the cylinders is then calculated.

Due to this fact, the combustion process will be hindered if there is too much or too little fuel. Performance difficulties and even shutdowns are possible if there is insufficient fuel.

However, if you do not use enough gas in your engine, you will notice a decrease in fuel efficiency.

How To Unplug The Mass Air-Flow Sensor

Only by unplugging this sensor can it be rendered inoperative. Neither a switch nor anything else exists. Disconnection is required in order for this to work. The good news for you is that I’ve put out a simple, step-by-step technique that should work for any vehicle.

Signs Of A Faulty Air Flow Sensor

When an engine’s airflow sensor is malfunctioning, there are a number of visible signs that it is creating problems. Before I go through the symptoms, I want to make it clear that they could be the result of another underlying issue.

Problems with the airflow sensor include:

Seconds after starting the engine, it comes to a complete halt.

Engine noises are audible when the vehicle is running.

When accelerating, there is a pause.

Rough idle is one sign that something is wrong with the engine.

The likelihood of a defective Mass Air-Flow sensor increases considerably if all of these problems occur at the same time.

Getting your engine evaluated by a dealership is the best way to avoid wasting time and money on a problem that doesn’t exist.

Your car needs to be cooled down. There is a good likelihood that the sensor is to blame if you have noticed high fuel usage and engine problems. When you’re finished driving, pull over somewhere safe and wait for the engine to cool down a bit. Due of the engine’s high temperature, this step should be taken slowly.

Most enthusiasts know where the MAF is located if they are familiar with the engine’s architecture. In most cases, it can be found behind the air filter housing. Airflow tubes have been appropriately fastened to the sensor, which has a square shape.

That’s when things get dicey. If you want to find the MAF sensor, you need to follow your car’s intake tube. Then you’ll notice the MAF sensor put on.

Afterwards, you must remove the bolts that hold the sensor in place. Getting started is a breeze.

It is impossible for a sensor to function properly without an external power source. As a result, in order to completely stop the sensor, you must also unplug the electrical connection. MAF wiring must be followed until you identify the electrical system’s connection to MAF.

Disconnect the wires at this time. Don’t be concerned. Disconnecting it will have no influence on your computer’s performance. The terminals can simply be removed by squeezing them. This is a straightforward procedure that does not necessitate any special equipment.

Finally, the sensor can be removed. When removing it, be careful not to injure it. In the future, you may need to do this again.

After Unplugging The Sensor

Work has not been completed. Close the hood and test the vehicle as you normally would, but first make sure everything is in working order.

The sensor may be seen. There is a risk that dirt has accumulated on the damage, even though it may not be visible. Clean it up and you’re ready to go.

Changing The MAF Sensor

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You don’t have to replace your vehicle’s MAF sensor every day. You may not need to replace the sensor at all if it has not been damaged. Dust, filth, and a plethora of other microorganisms abound in the atmosphere.

Dirt might accumulate on the sensor as air enters the intake. When this occurs, the sensor will be unable to perform its intended function. Using this device will cause the ECU to get inaccurate data.

Driving With A Faulty Sensor

As a result, you’ve concluded that it’s the sensor that’s the problem. You need to get somewhere quickly, like the mechanic, or else you’ll be late. For the most part, you’ll have to deal with some kind of problem at some point when driving.

These signs and symptoms might occur on the road, and you don’t want your engine to stall out in the middle of traffic. In addition to your own safety, the unexpected halt you cause could be hazardous to the vehicles and pedestrians in your vicinity.

Either remove the sensor before driving or purchase a new one and install it yourself to avoid taking any chances. In order to ensure that the car will not cause you any problems when driving, you must perform this step first and only then.

Most Likely To Get The Issue

There’s a good risk that your mass air-flow sensor will get dirty if you reside in a windy or dusty environment.

If you don’t have a way to remove and reinstall it, the only thing you can do is to do so. Remember to connect the sensor’s electrical supply, since it will not function without it.

Driving Without The Sensor

So you don’t want to or can’t afford to buy a new sensor. That’s totally understandable. Without this sensor, you can still drive the vehicle. That’s correct.

Fuel will be poured into the cylinders based on the ECU’s estimations when the sensor is unplugged.

Although the efficiency of the non-faulty sensor may be reduced, it will still be significantly better than the faulty one.

As previously mentioned, it’s preferable if you don’t even consider driving the vehicle without a sensor. It carries a high risk of injury or death.

Frequency Of The MAF Sensor Change

Every few months, the MAF sensor may need to be replaced. Depending on your car, you may require one that also includes an air filter replacement.

People who drive in dusty or sandy conditions, however, should take note of this. The majority of you should be able to get away with a simple sensor clean.

Resetting A MAF Sensor

There is a very little chance that the sensor is defective. In order to be safe, it is recommended that you first try all other possibilities before purchasing a new sensor or removing the sensor completely.

The battery of a sensor can be reset by unplugging it for 10 minutes and then plugging it back in. If the problem persists, you have no choice but to seek help.

An MAF sensor can fail even if it’s brand new. Engines’ check engine lights went on after new sensors were installed, according to users.

To reset the sensor, you must follow the same procedure. You’ll be ready to go when the light goes out.

Cost Of A MAF Sensor

Purchasing a sensor is no little investment. The ECU tables can automatically determine how much air is required, but if that doesn’t work, you’ll need to replace the sensor.

The second option is preferable since it eliminates the need to rely on a system that was set up as a fallback. You should expect to pay between $200 and $300 for a MAF sensor.

Despite its high cost, this component is essential to your engine’s performance.


The MAF sensor is a fascinating piece of automotive technology.. It’s possible to run a car without it, although it’s not ideal. For many, it is a crucial part of the engine.

Now, many of you came to this post to find out why a car might run better with the mass airflow sensor unplugged, but you may have stayed because of all the information and warnings about driving with a defective sensor provided in this article.

If you want to learn more about anything, it’s never a bad idea. In addition to answering your query, I hope that this post has served to clear up some misunderstandings.