Walker 225-1033 Manifold Absolute Pressure Sensor

Walker Products 225-1033 Manifold Absolute Pressure Sensor

Walker Products 225-1033 is a manifold absolute pressure sensor for select Saab applications. It uses a 3-terminal, rectangular female connector with spade-style terminals to support accurate engine load signal input for the vehicle’s engine management system.

Built by Walker Products, a long-standing manufacturer of fuel system and engine sensor components, this MAP sensor reflects the company’s focus on OE-level specifications and application accuracy. It is a direct-fit replacement for Saab 900, Saab 9000, and Saab 9-3 models listed below.

Key Features

• Manifold Absolute Pressure Sensor for engine load measurement
• Part number 225-1033
• 3-terminal design with spade terminals
• Rectangular connector shape
• Female connector with male terminals
• Walker Products engine sensor replacement for select Saab vehicles

Vehicle Fitment

• Fits 1999-2000 Saab 9-3, N/A
• Fits 1994-1998 Saab 900, N/A
• Fits 1991-1998 Saab 9000, N/A

Detailed Description

The Walker Products 225-1033 MAP sensor is used in engine management systems to report manifold pressure data to the ECU. That signal helps the control module calculate load and adjust fuel delivery and ignition timing. For Saab 900, Saab 9000, and Saab 9-3 models, accurate MAP sensor output is important for stable drivability and consistent engine response.

This part cross-references Bosch 15003 and Standard Ignition AS234 for the same application. If you are replacing a failing MAP sensor on a 1991-1998 Saab 9000, 1994-1998 Saab 900, or 1999-2000 Saab 9-3, 225-1033 is the relevant Walker Products part number to verify against your original sensor.

Common Issues This Part May Address

• Rough idle caused by incorrect manifold pressure readings
• Hesitation or poor throttle response during acceleration
• Check engine light related to MAP sensor circuit faults
• Incorrect fuel mixture from inaccurate engine load data
• Driveability problems on Saab 900, Saab 9000, and Saab 9-3 models

Installation Notes and Tips

Confirm the connector style, terminal count, and sensor shape before ordering. Compare the original sensor to Walker Products 225-1033 and verify the Saab model year listed in the fitment section. After installation, clear diagnostic trouble codes and inspect for vacuum leaks or damaged wiring that could affect MAP sensor readings.

Quality Assurance

Walker Products has supplied fuel system and engine management components since 1946 and manufactures to meet or exceed OEM standards and specifications. The company supports product accuracy through in-house engineering, product management, and technical support, and operates as an ISO 9001/IATF16949 certified manufacturer.