Standard Ignition AS304 Manifold Absolute Pressure Sensor

Reliable Manifold Absolute Pressure Sensor for Select GM Vehicles

The Standard Ignition AS304 Manifold Absolute Pressure (MAP) Sensor is engineered to provide accurate pressure readings for optimal engine performance. Designed specifically for various Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models, this sensor ensures precise air intake monitoring.

Key Features of the Standard Ignition AS304 MAP Sensor

• Female connector gender with a single plug-in connector for secure connection
• Three male blade terminals for reliable electrical contact
• Compatible with multiple GM vehicles including Buick Alero, Cadillac STS, Chevrolet Impala, and Pontiac Grand Am
• Part number AS304 ensures exact fit and function
• Designed to meet OEM specifications for emission control sensors

Detailed Description of the AS304 MAP Sensor

The Standard Ignition AS304 is a Manifold Absolute Pressure Sensor that plays a critical role in engine management systems by measuring the pressure inside the intake manifold. This sensor features a female plug-in connector with one connection point and three male blade terminals, providing a secure and stable electrical interface. Its design supports accurate data transmission to the engine control unit (ECU), which adjusts fuel delivery and ignition timing accordingly. Compatible with a range of GM vehicles such as the Buick Alero, Cadillac XLR, Chevrolet Monte Carlo, and Pontiac Silhouette, the AS304 is a direct replacement part that maintains proper engine function and emission control.

Common Applications and Issues Addressed

• Helps resolve engine stalling or rough idling caused by incorrect manifold pressure readings
• Prevents poor fuel economy linked to faulty MAP sensor data
• Reduces engine hesitation or lack of power during acceleration
• Assists in correcting check engine light triggers related to emission control
• Supports stable engine performance in Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models

Installation Notes and Tips

When installing the Standard Ignition AS304 MAP Sensor, ensure the vehicle’s ignition is off and the battery is disconnected to avoid electrical shorts. The sensor’s female plug-in connector and three male blade terminals should be inspected for corrosion or damage before installation. Properly seat the sensor in the manifold and secure all electrical connections firmly. Refer to the vehicle’s service manual for torque specifications and sensor location details specific to models like the Chevrolet Impala or Pontiac Grand Am.

Quality Assurance and Warranty Information

Standard Ignition manufactures the AS304 MAP Sensor to meet or exceed OEM standards for durability and performance. Each sensor undergoes rigorous testing to ensure accurate pressure readings and reliable operation. This part is backed by a limited warranty, providing coverage against defects in materials and workmanship under normal use conditions.