In your year.. the start signal goes from the key through the park/neutral/P something switch on top of the trans. If you want to check if it's aligned properly look up "external pnp" by my user id and in that thread there's a nub on the inner ring of the switch that when in neutral should be aligned with a line on the casing of the switch. If that's good, maybe it's going bad or something. Wiggling the shifter and or putting in Neutral is good. Because it's supposed to start in either P or N.