Manuals through 2025 now available!
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LEMON is the spiritual successor to CHARM, I recommend you try it!
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Crankshaft Fluctuation Sensor: Description and Operation
DESCRIPTION The diagnostic system has a pulser rotor on the crankshaft and a pulse pick-up sensor on the engine block. The ECM monitors the crankshaft speed fluctuation based on the CKF sensor signal and judges that an engine misfire occurred if the fluctuation goes beyond a predetermined limit.
