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Wiring diagram for 1990 Ford F-250 PCM, fuel injectors, IAC valv…

Wiring diagram for 1990 Ford F-250 PCM, fuel injectors, IAC valve, and MAF sensor.

This is a wiring diagram for a 1990 Ford F-250, specifically detailing the Powertrain Control Module (PCM) and related engine components such as fuel injectors, idle air control valve, and mass air flow sensor.

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