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What Is a Mass Air Flow Sensor?

The measures the air that flows into the engine and reports the data to the engine control unit (ECU). The information helps the ECU control the amount of fuel injected into the engine’s combustion chambers.

How Much Does a Mass Air Flow Sensor Replacement Cost?

The cost of aftermarket mass air flow sensors may range between $10 to $100 for parts alone. Several factors affect pricing, such as brand, recommended use, condition, material, and configuration. depending on the rates in your area.

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Here at www.myautopartsfactory.com, we have a wide array of aftermarket mass air flow sensors for various makes and models. We source our products from only the most trusted brands in the industry, so you’re sure to get mass air flow sensors that are built to last.

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Introduction to Mass Air Flow Sensor

The Mass Air Flow Sensor of Zhenhua Auto Parts Company is one of the key sensors in the automobile engine management system. It is like an “air intake expert” of an engine, which accurately measures the air flow entering the engine and transmits this data to the vehicle electronic control unit (ECU) in real time. According to the air flow information and other sensor data, such as engine speed and throttle position, ECU accurately calculates the fuel injection quantity to ensure that the engine can maintain the best air-fuel ratio under various working conditions. The sensor can provide accurate air intake data for the engine, whether starting the vehicle in the cold morning, driving at high speed on the expressway, or climbing in mountainous areas and other complex working conditions, so as to ensure the stable operation, high-efficiency power output and good fuel economy of the engine.

Features of Mass Air Flow Sensor

High-precision measurement technology

The advanced hot-wire or hot-film measurement principle (depending on the specific model) can accurately measure the air flow. It can sensitively capture the small changes of air flow, and provide accurate data even in low-flow intake conditions, such as idling or taxiing, which lays the foundation for accurate control of the engine.

Fast response characteristics

The heating element and sensing element in the sensor are optimized to respond quickly to the change of air flow, and the response time can be as low as certain milliseconds. When the driver suddenly steps on the accelerator to accelerate, the sensor can immediately detect the increase of air intake and quickly transmit the signal to the ECU, so that the ECU can adjust the fuel injection quantity in time, ensure the timeliness of the engine power output and avoid the acceleration lag.

High stability and reliability

The shell is made of high-temperature and corrosion-resistant materials, such as engineering plastics or stainless steel (depending on the application scenario), which effectively protects the internal sensitive components from the harsh environment of the engine compartment. At the same time, the internal circuit of the sensor has been carefully designed and has good anti-interference ability, which can work stably in complex electromagnetic environment, provide accurate air flow signals for a long time, reduce the probability of failure and prolong the service life of the product.

Application

Widely used in all kinds of gasoline engine and diesel engine vehicles, including cars, SUVs, MPVs, commercial vehicles and other vehicles.

In the field of cars, such as mazda 6, Ford Focus, Hyundai Elantra and other common family cars, ensure the stable performance of the engine in daily driving;

Luxury cars, such as lexus ES, Cadillac CT5, Jaguar XEL, etc., help high-end engines to achieve accurate air and fuel mixing control and improve driving comfort and power performance;

For commercial vehicles, such as Ford Transit, Iveco Ousheng, Futian Scenery, etc., the power demand and fuel economy of vehicles during transportation are guaranteed to adapt to the operation under different road conditions and load conditions.

Target clients

Automobile manufacturer: As an important supplier of parts and components in automobile production, it provides high-quality Mass Air Flow Sensor for automobile OEMs, helps new car research and development and production, ensures the accuracy and reliability of vehicle engine management system, improves vehicle performance and quality, and enhances market competitiveness.

Auto parts dealers: meet their bulk purchasing needs and provide stable supply for their downstream customers, such as auto repair shops and after-sales service centers. With high-quality products and rich product lines, it helps dealers occupy a favorable position in the auto parts market, expand their business scope and increase their market share.

Automobile repair shop and after-sales service center: provide reliable replacement sensors with the same original quality or performance for maintenance enterprises, help maintenance technicians to quickly and accurately diagnose and repair engine faults related to air flow, such as unstable idle speed, weak acceleration, abnormal fuel consumption, etc., improve maintenance efficiency, reduce the maintenance cost and time of customer vehicles, and enhance customer satisfaction.

Maintenance

Clean the filter screen regularly

Before air enters the sensor, there is usually a filter screen to filter impurities. It is recommended to check and clean the filter screen every 10,000-20,000 km to prevent dust and impurities from accumulating and blocking the filter screen, which will affect the air circulation and measurement accuracy. When cleaning, you can use compressed air to gently blow off impurities from the back of the filter screen, or use a soft brush to gently brush, but avoid damaging the filter screen.

Check the electrical connection

Every certain mileage (about 5000-10000 km), check whether the connecting plug of the sensor is loose, oxidized or corroded. If there is a problem with the plug, it should be cleaned or replaced in time to ensure that the electrical connection between the sensor and ECU is stable and reliable and the signal transmission is normal.

Performance calibration test

The performance of the air flowmeter is calibrated and tested by professional automobile diagnostic equipment every six months or according to the mileage specified by the manufacturer. Compare the standard data to see if there is any deviation in the measured value. If the measurement error is found to be beyond the allowable range, the sensor should be further inspected for damage, and replaced or repaired if necessary to ensure its measurement accuracy.

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Frequently asked questions

  • How to ensure the timeliness of product supply when purchasing in bulk?

    Zhenhua Auto Parts has established an efficient supply chain management system to ensure the timely supply of products by customers who purchase in bulk. We have established long-term and stable cooperative relations with many high-quality raw material suppliers to ensure the stable supply of raw materials. At the same time, in the production process, we adopt advanced production planning and scheduling system, predict the demand according to customer orders, reasonably arrange production tasks, optimize production processes and improve production efficiency. In addition, we cooperate with many professional logistics companies to choose the most suitable logistics mode according to the location and urgency of customers, so as to ensure that products can be delivered to customers quickly and accurately. For large customers with long-term cooperation, we will also reserve a certain amount of safety stock to deal with emergencies and ensure the continuity of production of customers.
  • What is the product quality traceability system?

    We have established a perfect quality traceability system. From the procurement of raw materials, each batch of raw materials has a unique batch number, which records the supplier, purchase date, quality inspection report and other information. In the production process, each production link has detailed records, including production date, production batch, operator, equipment number, etc. The product packaging is also printed with a unique traceability code, which can be traced back to the whole production process of the product by scanning the code or querying the database, including the source of raw materials, production processes, quality inspection data and so on. In this way, when there is a quality problem in the product, we can quickly locate the root cause of the problem, take effective improvement measures, and notify relevant customers in time to protect the rights and interests of customers.
  • Can you provide product training and technical support for corporate customers?

    Yes. We attach great importance to providing comprehensive product training and technical support services for corporate customers. For bulk purchasing customers, we can provide on-site training or online training courses according to customer needs. The training content includes the working principle, installation method, fault diagnosis and troubleshooting skills, daily maintenance points, etc. We also have a professional technical consulting team to answer customers' questions in the process of product use at any time. If customers encounter complex technical problems or need on-site assistance in practical application, we can arrange technicians to provide support at the customer's site to ensure that customers can correctly use and maintain our products and give full play to their performance advantages.
  • What are the targeted designs for vehicles with different emission standards?

    With the increasingly stringent emission standards, our Mass Air Flow Sensor has fully considered the requirements of different emission standards in the research and development process. For vehicles that meet the national six emission standards and above, our sensors are further optimized in terms of measurement accuracy, response speed and stability, which can measure air flow more accurately, provide more accurate control signals for engines, and ensure that vehicle exhaust emissions meet the requirements of high standards. At the same time, we work closely with automobile manufacturers to customize the sensor according to the emission control strategies of different models, so that it can perfectly match the engine management system of the vehicle and jointly achieve the goals of efficient combustion and low emissions. For vehicles with old emission standards, we also provide adaptive sensor products to meet their maintenance and replacement needs and extend the service life of vehicles on the premise of ensuring performance.
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