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No, the PCM (Powertrain Control Module) and ECA (Electronic Control Assembly) are not the same thing in a 1990 Ford F-150. The PCM is the main computer that controls the engine and transmission functions, while the ECA is a broader term that can refer to the assembly that houses the PCM and other electronic components. In some contexts, the terms might be used interchangeably, but they technically refer to different components within the vehicle's electronic system.

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3mo ago

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