TheArcher

We've checked the timing and it all checks out. We've held the gas pedal all the way down and it still just cranks. But today I will definitely check and re-check what you've listed. Thanks for your input!

Nope, no codes. The car has to be running to get any codes (at least, with the scanner we have).

Basically.... About 3 weeks ago car was intermittent no start. Cranking was rough/rumbly and gas pedal hadda be teased in order for it to sometimes start. Attached a missing ground strap and car was reliable for a few weeks. Still had a bit of a rough/rumbly start but at least started and drove. It ran fine, but I pulled the motor for HG job and no spark after re-install. Tested coil pack resistance, tested bad. Swapped coil pack....didn't help. Power to coil pack, no signal to coil pack. Crank sensor & cam sensors pass resistance tests. Checked wiring to ECU, passed. Reinstalled ECU, engine started and ran for 15 seconds including idling and revs but no issue was actually solved... But we reinstalled accessories. Again, no spark, no signal to coil. Fuses tested/examined, so not a fuse. It's a 2001 Subary Legacy Outback 2.5/EJ25. Any advice on what might be going on or how to test the ECU would be great help.