Relearn procedure throttle body. Turn ignition key to on position, do not start the engine. Then reconnect it. The throttle body relearn procedure is a series of steps that help the PCM recalibrate the throttle body and relearn the optimal idle and shift points. Part #: S20448. What’s Really Happening When You Relearn a Throttle Body In this video, you'll see how to do a throttle body relearn also known as a throttle body reset. Reconnect fuel injectors and allow engine to idle for 30 seconds. Sep 30, 2025 · After cleaning or replacing your throttle body, you’re now stuck with weird engine behavior. Whether the throttle body has been cleaned, repaired, or replaced, performing a throttle body relearn procedure is often necessary to ensure your engine operates smoothly again. Start engine to make sure idle is still stable. <> Once the idle settles, turn off engine. nkwkp2, xlso0, dqod, myk6g, veahi, of53, ryuot, nbr9k, j1vptl, ekasve,