Discussion
It could be a number of things. Clutch in my car, although working properly was always very heavy and felt 'dead'. The pressure plate diaphragm was shot and I had to replace the clutch. This is not the most likely however, as I don't think it would happen 'overnight'.
Another possibility is the release fork. It's a 'see-saw', one end is pushed by the slave cylinder pushrod, the other end pushes the release bearing and the centre pivots on a pin. This pin can eventually wear a hole in the release fork. When this is about to happen you can get the symptoms you describe. When it goes through you have no clutch! If it has a Tremec/Borg Warner T5 'box it will probably have an inspection hatch in the bottom of the bellhousing (a hole about 4" in diameter with a rubber bung in it), through which you should be able to see the fork.
It might also be a faulty slave or master cylinder, although the usual problem with both is that they leak.
Another possibility is the release fork. It's a 'see-saw', one end is pushed by the slave cylinder pushrod, the other end pushes the release bearing and the centre pivots on a pin. This pin can eventually wear a hole in the release fork. When this is about to happen you can get the symptoms you describe. When it goes through you have no clutch! If it has a Tremec/Borg Warner T5 'box it will probably have an inspection hatch in the bottom of the bellhousing (a hole about 4" in diameter with a rubber bung in it), through which you should be able to see the fork.
It might also be a faulty slave or master cylinder, although the usual problem with both is that they leak.
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