Cardone 74-3940 Mass Air Flow Sensor

Reliable Mass Air Flow Sensor for Buick, Chevrolet, Oldsmobile, Pontiac

The Cardone Mass Air Flow Sensor 74-3940 is a remanufactured emission control sensor designed to maintain accurate airflow measurement in select GM vehicles. This sensor supports optimal engine performance and emissions compliance for models like the Buick Skylark and Chevrolet Celebrity.

• Remanufactured Mass Air Flow Sensor with plastic black housing
• Compatible with Buick, Chevrolet, Oldsmobile, and Pontiac models including Celebrity, Citation, Cutlass Ciera, and Skylark
• Hose clamp mounting type for secure installation
• Includes sensor and instruction sheet for installation guidance
• Environmentally conscious with E-Waste compliance

About the Cardone Mass Air Flow Sensor Product Line

The Cardone Mass Air Flow Sensor product line focuses on remanufactured sensors that meet OEM specifications for emission control systems. These sensors are engineered to provide accurate airflow data to the engine control unit, ensuring proper fuel mixture and engine efficiency. The 74-3940 part number is part of this line, offering a reliable replacement option for various GM vehicles.

Product Details and Features

This remanufactured mass air flow sensor features a durable black plastic housing and uses a hose clamp mounting system for easy attachment. The sensor is designed to detect the amount of air entering the engine, which is critical for fuel injection and ignition timing. The package includes the sensor itself along with an instruction sheet to assist with installation. The sensor is E-Waste compliant, reflecting Cardone's commitment to environmental standards.

Common Issues Addressed by This Sensor

• Engine performance problems caused by faulty airflow readings
• Rough idling or stalling in Buick Skylark and Chevrolet Citation models
• Check engine light triggered by malfunctioning mass air flow sensor
• Poor fuel economy due to incorrect air-fuel mixture
• Emission control failures related to sensor inaccuracies

Installation Notes and Tips

Before installation, visually inspect the sensor element for any damage or contamination. The hose clamp mounting type requires securing the sensor firmly to the intake hose to prevent air leaks. Avoid over-voltage sources such as shorted wiring or cracked circuit boards that can damage the sensor. Follow the included instruction sheet carefully to ensure proper connection and calibration.

Quality Assurance and Warranty

Cardone remanufactured sensors undergo rigorous testing to meet OEM standards. The 74-3940 mass air flow sensor is built to provide consistent performance and durability. While specific warranty details are not provided here, Cardone products typically come with a limited warranty covering defects in materials and workmanship.