That wiring harness tip was excellent! Thanks soooo much! Just found the wiring harness on passenger side was worn. It had been rubbing against the breather's flex tube. As I moved the harness I saw sparking between it and the flex tube where it had been rubbing. The sparking occurred even with igni...

I wonder how this ECM fuse blowing issue panned out. My 93 Astro just started doing the same thing. Only happens when I accelerate hard while moving, so difficult to troubleshoot. I made sure the accelerator linkage wasn't rubbing on any wires. Blown 3 times so far, but starts right up after replaci...