Mass Air Flow Sensors | MAF Sensors

Mass Air Flow Sensors (a.k.a. MAF Sensors) are precision components that measure the amount of airflow entering the intake manifold and must communicate clearly with the Engine Control Module (ECM). Remanufactured MAF sensors with debris from prior use can hinder this communication and cause the vehicle to experience drivability issues.  To ensure accurate airflow, precise performance, and longer service life, Intermotor® offers a higher-quality alternative: a line of 100% NEW, never remanufactured, Mass Air Flow Sensors. 

The New Benchmark for Mass Air Flow Sensors

MAF Sensor

Number of NEW
  MAF Sensors
     in our line 

  coverage for NEW
   OE-quality MAFs

  Our MAF Sensors
   are 100% NEW,
 not remanufactured 

  Our MAF Sensors
are Airflow Calibrated
  to ensure accuracy

Manufacturing 100% New Mass Air Flow Sensors

Every Intermotor® MAF Sensor is 100% NEW, not remanufactured. All SMP-manufactured MAF Sensors are engineered and built in our vertically integrated TS16949-certified facility. SMP-manufactured sensors are designed with improvements such as thicker walls, upgraded components, and a custom-designed platinum RTD sensor. The result is a line of 100% NEW MAF Sensors that provide highly accurate readings and precise airflow output under all operating conditions.

Why MAF Sensor Testing and Calibration Matters

One of the most important factors for sensor performance is precise testing and calibration. This is what sets Intermotor apart from the rest. With onsite engineering, design, and test labs at our ISO/TS16949- and ISO14001-certified manufacturing facility, Intermotor is able to produce 100% new mass airflow sensors that precisely match the OE output and perform flawlessly under all operating conditions. Here are just a few of our testing and calibration techniques:

MAF Sensor

     Choked Airflow
& Calibration
  accurately measures
    and calibrates our
     new MAF sensors

       Salt & Chemical
 Contamination Testing
    ensures MAF sensors
       withstand harsh
 environmental conditions

     On-Vehicle Road
Vibration Testing
ensures performance and
  durability in real-world

The Importance of Quality RTD Sensors

In addition to testing and calibration, another important factor for performance is the use of high-quality RTD sensors. All SMP-manufactured mass airflow sensors feature custom-designed, platinum flow RTD sensors that precisely match OE outputs, and temperature RTD sensors that match OE specifications more closely than the diodes used by some competitors. Plus, the pull strength of our RTD lead joints not only matches the OE, but exceeds the aftermarket competition. Our RTD components also don't break under extreme vibration.

RTD sensors

Competitor's low-quality RTD sensors failed our vehicle road, air flow, and high-temp degradation tests, resulting in noticeable drivability issues.

Our custom-designed platinum RTD sensors outperform the aftermarket competition in vehicle road, air flow, and high-temp degradation testing, which results in proper drivability

When should you replace a Mass Airflow Sensor?

Mass Air Flow Sensor

Road debris and other contaminants that get past the air filter can coat the sensor’s sensing element. The coating insulates the element, causing under-reporting of airflow off-idle and over-reporting of air at low air speeds. GM systems are the one exception to over-reporting of air mass at low airflow speeds. 

Often, technicians first try to clean the mass airflow sensor. Although cleaning a contaminated sensor may seem to bring the performance back, it rarely brings it to 100% operation and accuracy. There are many instances where the internal circuitry is damaged or shorted. In these cases, the sensor needs to be replaced.  Because the sensor is a key component to the engine’s fueling strategy, it is crucial that it reports with 100% accuracy to ensure peak performance, fuel economy, and reduced emissions.

How to Install a MAF Sensor

In this how-to video, our ASE-certified Master Technician shows you how to install a mass air flow sensor. For more MAF videos, check out our YouTube page.