I don't think the ECM has any coil control, check your grounds on the engine, they are
located on a bolt on the distributor housing, lots of little black wires, I would suspect
this is the problem, also check the rest of the grounds, there is the one from the
battery to the body, and there is one behind the drivers side tail light. Ground problems
on these vehicles cause strange things to happen.
I had one that my turn signal turned on the wipers
and I have heard of other strange ones too.
I suspect the ignition relay isn't grounding to turn on the coil power, you should hear
clicking noise (relays under the dash) as you get to the on setting turning the key, and
I think a second one as you start the engine, but I can't remember for sure, I don't DD
my trucklet anymore, she's a trail rig these days
Wild