ONE time when i used to own my 91 Loyale my car died just like that, no clicking, grinding, stuttering, thumping whatsoever. We latere went to trouble shoot and everything seemed fine, engine turned but would not even try to start (no spark)
We removed the Dist. cap, looked at the dist. rotor and what hapopened was that the small tiny screw that held the rotor onto the dist. shaft came off, so everything would spin freely except the dist. rotor.
Google stolen pic...
http://benms.com/944camseals_files/image001.jpg (link due to BIG picture)
THAT screw...