If the MAF sensor is defective or dirty, it does not send correct measured values to the control unit of Expedition. What happens when MAF sensor malfunctions in Ford Expedition? It is not only important for power delivery in your Expedition, but also for the lowest possible pollutant emissions. The mass air flow sensor is part of the engine’s intake system and is located between the air filter box and the throttle valve. Dirty or faulty mass air flow sensor (MAF)ĭefective or dirty mass air flow sensor (MAF) in your Ford Expedition can result in loss of power, uneven engine running, erratic idling, misfires, poor exhaust emission values including black smoke. So this is the first thing you should check. Replacing the filter on your Expedition takes a few minutes and does not require any special knowledge. In the worst case, the engine can stall if the air filter is extremely clogged. This ultimately also increases fuel consumption. ![]() If the air filter is dirty in your Ford Expedition, it can have a negative effect on the performance of the engine, as less air passes through the dirty filter which suffocates the engine.
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