Standard Ignition AS494 Manifold Absolute Pressure Sensor

Overview of Standard Ignition AS494 Manifold Absolute Pressure Sensor

The Standard Ignition AS494 is a reliable manifold absolute pressure (MAP) sensor designed for select Chevrolet, Fiat, and Ram vehicles. This black sensor features a female connector and is engineered to provide accurate pressure readings essential for engine performance and emission control.

• Connector Gender: Female
• Color/Finish: Black
• Connector Quantity: 1
• Connector Shape: Round, rectangular
• Connector Type: Plug in
• Hardware Included: Yes
• O-Rings Included: Yes
• Terminal Gender: Male
• Terminal Quantity: 4
• Terminal Type: Blade
• Vacuum Port Quantity: 1
• Wiring Harness Not Included

Detailed Product Description

The Standard Ignition AS494 MAP sensor is designed to measure the absolute pressure inside the intake manifold, providing critical data to the engine control unit (ECU) for optimal air-fuel mixture and ignition timing. Its plug-in connector with a female interface and four male blade terminals ensures secure electrical connections. The sensor’s single vacuum port allows precise pressure measurement, while included O-rings and hardware facilitate proper installation and sealing. The black finish offers durability and resistance to engine bay conditions. Compatible with Chevrolet 500 and 700 models, Fiat 500 and 700, and Ram Astra vehicles, this sensor meets OEM specifications for emission control sensors.

Common Applications and Issues Addressed

• Helps resolve engine stalling or rough idling caused by incorrect manifold pressure readings
• Improves fuel efficiency by providing accurate data for air-fuel ratio adjustments
• Reduces emissions by ensuring proper sensor input to the ECU
• Addresses check engine light triggers related to MAP sensor faults
• Supports stable engine performance under varying load conditions

Installation Notes and Tips

• Ensure the engine is cool before installation to avoid injury
• Use the included hardware and O-rings to secure the sensor and prevent vacuum leaks
• Verify connector shape and terminal type match the vehicle’s wiring harness
• Do not force the sensor into place; align the plug-in connector carefully
• Check for any vacuum hose damage or blockages before installation

Quality Assurance and Warranty

Standard Ignition manufactures the AS494 MAP sensor to meet strict quality standards, ensuring reliable performance and durability. The sensor includes all necessary hardware and sealing components for proper installation. While specific warranty details may vary, Standard Ignition products typically come with a limited warranty covering defects in materials and workmanship.