Most likely what you don't want to hear. Others will agree and some will have suggestions. One person recently said "It's the nature of the beast" - "You can start throwing all kinds of parts at it to find out it still does the same thing". (Paraphrased).

You can search the archives but many of these cars (Including my current one (89) and my 2 previous ones 87 - 91) have done the same thing. (Not the rough idle though. The warm start / die then re-start just seems to be common with these.

I've had temp sensor, oxygen sensor, Tune-up, Vac hoses, Fuel adjustments, EHA valve etc. Runs fantastic, great gas mileage but the same "issue" as most others..