Recent garage job on my Mondeo Tdci to cure an intermittent problem with the engine cutting out. Replacement camshaft sensor seems so far to have done the trick (fingers crossed). Any tekkies out there know what a camshaft sensor does?
Splodgeface
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It tells the ECU at what position the crankshaft is at. On my escort, the sensor is pointed at the flywheel which have lots of slats in it. When the sensor passes one of these slats a signal is sent back to the ECU. Usually there's an extra-long slat telling the ECU where TDC of piston 'x' is.
A lot of new cars have a sensor on the camshaft too, though I've never known why!
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Hi,
In response to my italicised point at the bottom (not meant to be btw, only meant to italicise the 'x') {Sorted. DD}, I had a think, and is it necessary for engines with multi-point fuel injection for injector timing? Certainly would be needed on cars with distributorless ignition and coil packs on each sparking plug I would have thought?
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The sensor is used as a reference for the ECU to determine the camshaft's position, from which the correct timing for the sequential fuel injection can be determined.
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Many thanks for those replies.
The penny hasn't quite dropped yet, but its getting there. Why would this faulty sensor be responsible for my engine cutting out?
Many thanks, again, for any help...
Splodgeface
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If the old sensor was breaking down and not detecting the position of the crank, it would send either no signal or the wrong signal to the ECU. Thus the ECU wouldn't know when to inject the fuel or fire the spark etc, and so the process stops and your engine cuts out.
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Thanks! I think I'm there!
This is a great site.
Just driven to London & back - car's going like a dream again.
Splodgeface
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