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Instructions for Cleaning the Mass Air Sensor

Model: Ford Escort MK 4 - Years 1990-2000
Part: Engine

The perfect efficiency of the mass air sensor is absolutely essential for the engine to deliver its power correctly: it is indeed based on the amount of air drawn into the engine that the ECU manages the amount of fuel; in case of power loss from the engine, the first attempt is to clean the mass air sensor. This sensor is located just after the air filter box: therefore, disconnect the connector, unscrew the two securing clips, and remove the sensor; take off the circlip and the metal mesh filter and clean the sensor's resistor, which should be cleared of deposits using brake cleaner (avoid scraping).

Updated on 17 February 2026 by ScegliAuto

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