Have you disabled the VATS (security system)? I thought VATS would only allow it to run a few seconds, but I suppose that could vary.
the guy I sent it to for reflashing was supposed to disable the VATS. I'll need to check and see if that's stopping everything. It started 4 times, each time I let it idle longer. The last time was over a minute. Then #5...just cranks and cranks and no fire. VATS may very well be what's going on ...