Integra GS-R Coupe L4-1797cc 1.8L DOHC (VTEC) MFI (1997)
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Crankshaft Speed Fluctuation (CKF) Sensor: Description and Operation
DESCRIPTION
The diagnostic system has a pulsar 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.
