I see somewhere up above:

So Catspaw,

Do you have a lot of experience with a faulty crank position sensor???

Relative to Spaw, did you mean "cranky position sensor?"

Anecdotal comment, probably with very little applicability to the current question. The only instance I've seen where the same symptom was found consistently was eventually traced to "operator error." The driver was in the habit of "topping off" every time fuel was added (not recommended), and habitually kept a "full tank" (not a bad habit).

The problem was that every time he "topped off" the carbon canister intended to capture evaporation from the fuel tank got saturated with fuel. Once the engine is up to running temp, it sucks air back through the canister to clear the fumes; but on a short run the can stayed wet. This affected the mixture when a "warm restart" was attempted, and made it very difficult to start.

This driver had lots of other things "lacking maintenance" that contributed to the problem; and it was, of course, not the same breed as the one in question here. The point is just that simple things can bite you unexpectedly.

Finding a shop that can read the error codes that the vehicle provides is generally a very good idea. A problem with relying on the guy with the latest diagnostic tools is that most of the computers (in that era, at least) were deliberately rigged to "ignore" intermittent errors, and in some cases the data indicating what happened gets "erased" if the error doesn't repeat the next time the engine starts "normally." Since there almost always are "other errors" that could mean something, this can lead to lots of expensive replacement of good parts, if the person doing the work doesn't know when to ignore the computer.

My 1995 Chevy Service Manual (different vehicle, same era) has an extensive section on when to NOT USE THE DIAGNOSTIC SYSTEM, with additional warnings throughout. I have not found a "dealer service agency" that appears to have read those sections.

John