waveforms > sensors > crankshaft > Crankshaft and Camshaft

Crankshaft and Camshaft

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badThis is a bad waveform
Vehicle:Fiat Coupe (20V, 5 cylinder)
a Ch A:Crankshaft
b Ch B:Camshaft

Crankshaft and Camshaft Waveform Notes

The above waveform is a camshaft and crankshaft waveform from a Fiat Coupe (20V, 5 cylinder).

The camshaft signal (channel B) is normal, but the crankshaft signal (channel A) decays away to near zero every revolution of the engine. This is caused by the flywheel moving away from the sensor. Possible causes are damage to the flywheel or serious mechanical damage to the crankshaft.