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If the engine suddenly speeds up but the car does not, you have a clutch problem or more likely a slipping freewheel or maybe a transmission problem, that's lowest on my likelihood list. Of course you can hear it speeding up, do you have a tach to confirm it? Does the engine speed up and the car slow down at the same time, as though you had depressed the clutch although you did not??
There is an inconsistency in your report, engine speeding up is not the same as engine stalling. If the engine speeds up it is running, and the load of propelling the car has been reduced or removed because something is slipping. If the engine stalls, ie dies, the oil light and alternator light should come on, do they? Are you saying it speeds up and then dies? None of the three reasons for it speeding up should cause it to stall/die. Need better description of what is happening to resolve the discrepancy of speeding up and dying.
If you are driving along happily at say 30-50mph and slightly depress the clutch gradually only to the point where it begins to disengage, keeping your right foot steady on the gas, the engine will speed up regardless of cause. Should give the same sensation as when the problem occurs. Does it?
Does your freewheel work? Do you know how it is supposed to work? The control for it should be fully in one position or the other, not in between. Unless you need to be engaging and disengaging it regularly, I would remove the control rod and make sure that the plastic quadrant that it attaches to on top of the transmission is fully turned to the chosen position (freewheel On or Off) and then do something to lock it in that position.
Clutch pedal up = clutch engaged. Clutch pedal down = clutch disengaged.
posted by 75.147.23...
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