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As far as I can tell Ford's have either a map sensor or a maf sensor but not both. I believe 2004's use the maf sensor. MAF means mass air flow, and the sensor is located just past your air filter. It is a large cylindrical piece that air flows through, around 3-4 " in diameter and has an electrical plug on the side. For older vehicles you have a map sensor, which is a barometric pressure sensor usually located on the sidewall of the engine compatment. It is a small plastic piece mounted on the side with one cable going to it.

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17y ago

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