I've got an '88 olds with the exact same engine. I'll look up the
codes for you.
I've had the same problem...may not me the exact same, I was pulling a
42 (knock sensor i think).
Car would start and run fine for while, then just die. Wait for a
minute or two, then try a restart and she'd fire up fine and away I
went. The it would happen again, back to square one.
Replaced the Coil Pack and C3I ingnition control module (resided under
the Coil pack).
This solved my problem. Don't do it yet though...Lemme see what the
codes say. They're probably false though. They usually are.