I drove my 94 Vanden Plas Jaguar to work. Running perfectly as always. Parked. Returned to it to do lunch. Cranked fast as usual, but did not start instantly (as usually does) nor start at all. I hear the fuel pump running (quietly) and there is pressure if I remove the gas cap, so I think fuel system is operative. I checked all relays and fuses (boy are there a lot of those!) Is it likely to be the crank position sensor? Car has never once had an issue nor run anything except superbly. No prior indication of any kind. Just this sudden no start.