Check you grounds, those are like 8 gauge wires you cant miss them. If playing with the harness makes it start you probably have a bad contact point. Best thing to do is to unplug your ECU, then manually inspect each wire going to the harness from the ECU plug and check out for loose pins.Lance J said:Cool manual...thanks.
I has happened twice where the car would die for no reason & when I tried to start it, the car would just crank forever & not start (no spark) I remove the plastic peice over the ecu, reset the battery & the car would be fine, WTF?? I'm thinking loose ground connection somewhere or stripped bolt on the ecu harness.