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To check the mass air flow (MAF) sensor on a 1997 Cadillac DeVille, start by visually inspecting the sensor and its wiring for any signs of damage or loose connections. Use a multimeter to measure the voltage output of the MAF sensor while the engine is running; it should typically vary between 0.5 to 4.5 volts depending on engine load. Additionally, you can use a scan tool to read any trouble codes related to the MAF sensor and monitor its live data for proper airflow readings. If the sensor is faulty, it may need cleaning with MAF cleaner or replacement.

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2d ago

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