After testing the coil and finding it not in spec, I replaced it.

Now the car won't run at all. Won't catch.

As suggested I fired it with the FP relay out. While cranking I noticed that it does not turn over rythmically. Its cadence is not right. I'm guess something must be broken inside the engine or one of the cats collapsed and is fully blocked or something.

what the heck do I test next? Wiring I guess, or compression maybe?

This car has had problems with the wiring harness, I had to splice a new ground in for the IACV not too long ago.

Scott