AO Silver Member
Join Date: Jul 2005
Location: I would rather not say
The cut-off switch is an inertia type switch, triggered by a sudden jolt (i.e. in the case of a crash).
However, going by your other post you say the car will restart on it's own again after a while. If this is the case then it won't be the fuel cut-off switch as that switch needs a manual reset every time it is triggered and you haven't said you are having to keep resetting that switch before trying to start the car each time.