Just thought I past this along , Checked both cam & crank sensors ok coil ok , all fuses ok . Still no spark ,Check wiring ok . Turns out one of the drivers for the coil were not grounding . Instead of grounding it was hot all the time . Which it should not be . Only One hot wire and three ground wires . I had 2 hot wires and two grounds I pulled out the one hotgoing to the ecm, the wire that use to be a ground and it started up on 4 cyls. So I replaced the ecm and the van runs find.. Hope this helps... MPS AUTO SERVICE..

You bet it helps. Thanks for posting a fix. My signature below says it all. Not enough will do it.