Standard Ignition AS78 Manifold Absolute Pressure Sensor

Overview of Standard Ignition AS78 Manifold Absolute Pressure Sensor

The Standard Ignition AS78 Manifold Absolute Pressure (MAP) Sensor is designed specifically for Toyota RAV4 models, providing accurate manifold pressure readings essential for optimal engine performance. This sensor features a durable black finish and a reliable rectangular female connector for secure plug-in installation.

• Three male blade terminals for precise electrical connections
• One female rectangular plug-in connector for easy wiring
• Includes mounting bracket(s) for secure placement
• Single vacuum port for accurate pressure measurement
• Compatible with Toyota RAV4 models requiring part number AS78

Detailed Product Description

The Standard Ignition AS78 MAP Sensor is engineered to monitor the absolute pressure inside the intake manifold of Toyota RAV4 vehicles. It features three male blade terminals that connect to a single female rectangular plug-in connector, ensuring a stable and reliable electrical interface. The sensor’s black color and compact design allow it to integrate seamlessly within the engine bay. A mounting bracket is included to facilitate proper installation and secure fitment, although hardware and O-rings are not included. The sensor’s single vacuum port accurately detects manifold pressure changes, which is critical for the engine control unit (ECU) to adjust fuel delivery and ignition timing.

Common Applications and Issues Addressed

• Helps resolve engine stalling or rough idling caused by incorrect manifold pressure readings
• Addresses poor fuel economy linked to faulty MAP sensor data
• Prevents check engine light triggers related to emission control sensor faults
• Improves throttle response by providing accurate pressure input to the ECU
• Supports emission control compliance by monitoring intake manifold conditions

Installation Notes and Tips

• Ensure the mounting bracket is securely fastened to avoid sensor movement
• Verify the connector is fully seated to prevent electrical connection issues
• Check vacuum port for any blockages or leaks during installation
• Do not reuse old O-rings; replace if necessary to maintain vacuum integrity
• Consult the Toyota RAV4 service manual for specific torque specifications and sensor location

Quality Assurance and Warranty

Standard Ignition manufactures the AS78 MAP Sensor to meet or exceed OEM specifications for fit, form, and function on Toyota RAV4 vehicles. While hardware and wiring harnesses are not included, the sensor is tested for durability and accuracy before shipment. Please refer to Standard Ignition’s warranty policy for coverage details.