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What are the symptoms of a bad mass air flow sensor?

1 Answers

EloiseRose

07/30/25 12:27am

The symptoms of a faulty mass air flow sensor are as follows: 1. Engine surging and intermittent stalling caused by MAF sensor malfunction. Reason: Inaccurate high-speed signal output from the mass air flow sensor. 2. Black smoke emission from the engine and increased fuel consumption due to MAF sensor failure. Reason: Excessive fuel injection from the injectors and rich air-fuel mixture in the engine, as the mass air flow sensor affects fuel injection, leading to these issues. Summary: The mass air flow sensor is a crucial component that impacts the engine's operational state. Symptoms like engine stalling, surging, black smoke emission, and high fuel consumption indicate potential MAF sensor failure. Common causes of MAF sensor damage include wiring faults or excessive contamination of the sensor itself.

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