I got an 89 iroc efi with a new cap&rotor, coil, wires, plugs, ignition module, and swapping back and forth an MSD-6AL.
The trouble is, it just up and quits on me anywhere from 1-30 minutes after I start it, most of the time it restarts, sometimes it doesn't. (Like now)
I'm pretty sure its getting fuel by the smell and it generates no engine codes
I dont get it.
Sometimes the idle roughens out before it dies, other times it goes off like the car was turned off.
When it dies there's a buzzing noise coming from the plenum area that sounds like a bee trapped under a sheet of paper, its about 1.5 seconds and then a 2 second pause and it stops after I turn the ignition off.
This car has left me stranded in several intersections and on the side of many a road trying to figure this out