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Electronic Control Unit or ECU usually controls the engine, transmission, or body controls. Modern cars have three of these units for the above mentioned areas. The ECU most commonly is referring to controlling the engine and emission controls. It supplies the engine with the proper fuel, spark, and timing, to make the engine run and perform efficiently without too much pollution.
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What is the function of the Delphi electronic unit inside the air cleaner box of a 2002 Buick Regal?
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