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post #78 of (permalink) Old 2nd October 2007
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Actually Merky,the sensor on the camshaft isn't the TDC sensor,it is the Camshaft Position Sensor!.It tells the ECU which cylinder is in the firing position,as if the engine is at TDC it doesn't guarantee that cylinder 1 is firing.

If the TDC /Crankshaft Position sensor is faulty it will cause starting problems and sometimes running problems.If the Camshaft Position Sensor is fautly the engine will still usually run,but like a bag of s##te!.

99% of the time the TDC sensor is at fault as small metal filings from the flywheel/clutch area stick to the magnetic pick up and block the signal,hence why cleaning it usually has a positive effect.The Camshaft Position Sensor is usually placed in an area where metal fragments are less of a problem......

I'd rather push my Alfa than drive a BMW....
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