Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2004 Land Rover Freelander (LN) V6-2.5LFACTORY OEM SERVICE PROCEDURE
Air Flow Meter/Sensor: Description and Operation
Mass Airflow Sensor
Description
This is a 'hot film' MAF sensor and it is located between the air filter/engine cover and the throttle body.
The MAF is determined by the cooling effect the flow of intake air has over a "hot film" element contained within the sensor: The higher the air flow the greater the cooling effect and hence the lower the electrical resistance of the "hot film" element.
A fault is detected if the MAF signal exceeds the maximum or minimum threshold or the difference between the calculated load and the actual MAF signal is too great.
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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