1989 B2600i runs then dies. Won't start again for some time after. New ECU, distributor

Hello: I tested these. All have power. Still no spark.

Hello: Tested all of these. All have power. Still no spark.

All good. Still no spark.

Replaced ecu/ecm, distributor, coil. Still does the same.

Yes, and power at the distr too

Yes, and at the distrib. No spark tho

Tried original, and 2 new ones. Same results. May run for 10-15 min then shuts down and won't start again for some time

EFI relay? Would /could it affect spark?

Is the EFI relay located in the engine compartment by the fuse block, or is it behind the kick panel at the drivers side? Thanks!

Well. I've tried everything short of hiring a voodoo priest. Is it possible that a bad or going bad fuel pump could kill spark at the coil? Thanks!

Sorry, I will stick with this post. I'm new to this, thought maybe I needed a new post since so much time had elapsed. Thanks!

Hello? Here is a list of new parts: Fuel pump, distributor, igniter, EFI relay, ECM, coil. Still doing the same. If it starts, will run until it just starts to warm up to operating temp, then dies. Has no spark and no fuel after it dies.

I am curious if you solved the problem with your B2600. I am having the same problem, I found another truck at the junk yard and got all the elect parts out of it. Changed all, one at a time starting with computer, coil, igniter, distributor, sensors. Got new plugs, wires, relays, and fuel pump/filter. This is a newly rebuilt motor that was running strong for most of a year then just crashed. Had it running again for a little while but same problem (just like yours) keeps coming back.