Welcome to the forum. When the problem occurs, check ecm-ign fuse 10 amp, if you haven't already. Use a testlite, the fuse circuit goes hot when you turn on the key. Once you crank it enough to bring up oil pressure, the pump should run, there shows to be an o/p switch in the fuel pump circuit. If the switch and circuit are functional, all you need is voltage, to run the pump.
I wanted to add, voltage to the oil pressure switch comes from a fusible link, hot all the time. The pcm also gets voltage from the same fusible link.
Saturday, November 14th, 2009 AT 9:30 AM