Standard Ignition AS640 Manifold Absolute Pressure Sensor

Overview of Standard Ignition AS640 Manifold Absolute Pressure Sensor

The Standard Ignition AS640 Manifold Absolute Pressure Sensor is designed for precise engine management in select Mercedes-Benz models. This sensor plays a critical role in monitoring the intake manifold pressure to optimize fuel delivery and engine performance.

• Compatible with Mercedes-Benz C43 AMG, C400, C450 AMG, CLS400, E43 AMG, E400, E450, GL450, GLC43 AMG, GLE43 AMG, GLE400, GLE450 AMG, GLE550e, GLS450, ML400, S450, S550e, SL400, SL450, and SLC43 AMG
• Part number AS640 ensures exact fit and function
• Manifold Absolute Pressure Sensor designed for emission control systems
• Engineered to provide accurate pressure readings for optimal air-fuel mixture
• Durable construction suitable for demanding automotive environments

Detailed Product Description

The Standard Ignition AS640 is a Manifold Absolute Pressure (MAP) Sensor specifically engineered for a range of Mercedes-Benz vehicles, including AMG and non-AMG variants such as the C43 AMG, E43 AMG, and GLS450. This sensor measures the absolute pressure inside the intake manifold, providing essential data to the engine control unit (ECU). Accurate pressure readings allow the ECU to adjust fuel injection and ignition timing, which is vital for maintaining engine efficiency and reducing emissions.

By using the AS640 sensor, vehicles like the Mercedes-Benz GLE450 AMG and SL450 maintain proper air-fuel ratios, contributing to smoother engine operation and compliance with emission standards. The sensor’s compatibility with multiple models ensures that it meets the specific requirements of each engine configuration.

Common Applications and Issues Addressed

• Helps resolve rough idling and engine stalling caused by incorrect manifold pressure readings
• Addresses poor fuel economy due to inaccurate air-fuel mixture data
• Reduces engine hesitation and power loss during acceleration
• Prevents check engine light triggers related to MAP sensor faults
• Supports emission control by providing reliable sensor data to the ECU

Installation Notes and Tips

• Ensure the vehicle is off and cooled down before installation
• Locate the existing MAP sensor on the intake manifold for the specific Mercedes-Benz model
• Disconnect the electrical connector carefully to avoid damage
• Remove the old sensor and install the Standard Ignition AS640 in the correct orientation
• Reconnect the electrical connector and verify secure fitment
• Clear any diagnostic trouble codes after installation to reset the ECU

Quality Assurance and Warranty

Standard Ignition parts, including the AS640 Manifold Absolute Pressure Sensor, are manufactured to meet or exceed OEM specifications. Each sensor undergoes rigorous testing to ensure reliability and performance under various operating conditions. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in material and workmanship to provide confidence in product quality.