Engine Control Unit Repair - Get an online auto repair estimate

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The vehicle's engine control unit (ECU) is a computer that receives information from sensors in the engine. The computer processes this information and makes calculations to control ignition timing, fuel-delivery parameters, engine idle speed, and pollution emitted from the vehicle. The control unit  interacts and makes mutual decisions with systems throughout the vehicle. On newer vehicles, the ECU may also control the engine cooling fans, cruise control, and AC.