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The oil control valve circuit on a 2001 Toyota Echo regulates the flow of oil to the variable valve timing (VVT) system, which adjusts the timing of the engine's intake and exhaust valves for optimal performance. By controlling oil pressure to the VVT actuator, it helps enhance engine efficiency, improve fuel economy, and reduce emissions. When functioning correctly, the oil control valve contributes to smoother acceleration and overall engine responsiveness. If it malfunctions, it can lead to poor engine performance and increased emissions.

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3mo ago

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