Air Mass Sensor - Ci Ignition - QM881
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Product Information
Full details
This guide is for owners and mechanics working with BMW vehicles who need a reliable replacement Air Mass Sensor. The QM881 from Ci Ignition ensures accurate air intake measurement for optimal engine performance and fuel efficiency, though it notably lacks an integrated air temperature sensor. Key features include a robust housing, a D-shaped 4-pin connector, and precise airflow sensing capabilities.
All features
| Model Part Number | QM881 |
|---|---|
| Brand | Ci Ignition |
Extended Product Information
FAQs
Does this sensor include an air temperature sensor?
No, the QM881 model does not have an integrated air temperature sensor. It is designed to work with vehicles that have a separate air temperature sensor.
What is the length, height, and width of this sensor?
The QM881 sensor has a length of 182 mm, a height of 125 mm, and a width of 165 mm.
What type of connector does the QM881 use?
It features a 4-pin connector with a D-shape.
What is the primary function of an air mass sensor?
An air mass sensor measures the volume and density of air entering the engine, allowing the ECU to adjust fuel delivery for optimal combustion.
Can I clean the QM881 air mass sensor?
It is not recommended to clean air mass sensors, especially with chemicals, as they are delicate. If performance issues arise, replacement is usually the best course of action.
What does 'without integrated air temperature sensor' mean?
This means that the function of measuring air temperature is handled by another sensor in the vehicle's intake system, not by this specific air mass sensor unit.
What is the OEM part number this sensor is compatible with?
This QM881 sensor is compatible with BMW OEM part number 13627788744.
Troubleshooting
Check Engine Light (CEL) illuminates after installation.
Verify the electrical connector is fully seated and locked. Ensure the sensor is correctly oriented and securely mounted. Double-check compatibility with your vehicle's specific model and year. A diagnostic scan may be needed to clear codes.
Rough idling or stalling.
Confirm the air intake duct is sealed and free of leaks around the sensor. Ensure no debris entered the intake during installation. Re-seat the sensor and connector.
Poor engine performance or reduced power.
Check for any obstructions in the air intake system before and after the sensor. Ensure the air filter is clean and correctly installed. Verify the sensor's electrical connection.
Increased fuel consumption.
A malfunctioning air mass sensor can lead to incorrect fuel calculations. Ensure proper installation and connection. If issues persist, consult a professional mechanic.
Pros and Cons
Pros
- Ensures accurate air-fuel mixture for improved engine performance.
- Helps maintain optimal fuel economy.
- Direct fit for compatible BMW models.
- Robust build quality for longevity.
- Cost-effective replacement option.
Cons
- Does not include an integrated air temperature sensor.
- Requires precise installation to function correctly.
- Compatibility is specific to certain BMW models.
- May require professional installation for optimal results.
Setup, Compatibility & Care
Compatibility:
This QM881 Air Mass Sensor is specifically designed for the BMW 1 (E81) 120 d (Hatchback, Diesel) produced from March 2007 onwards. Always verify your vehicle's VIN and existing part number against the OEM reference BMW: 13627788744 before purchasing.
Setup:
- Ensure the engine is off and cool.
- Locate the existing air mass sensor in the intake duct between the air filter box and the throttle body.
- Disconnect the electrical connector.
- Carefully remove the old sensor (usually held by screws or clips).
- Install the new QM881 sensor, ensuring it is correctly oriented.
- Reconnect the electrical connector securely.
- Replace any removed components and ensure all connections are tight.
- Start the engine and check for any warning lights.
Care:
Air mass sensors are sensitive components and should not be cleaned with solvents or abrasive materials. Avoid touching the sensor element. If the sensor becomes contaminated, replacement is typically the recommended solution. Ensure the air filter is in good condition to prevent debris from reaching the sensor.