95 jeep wrangler won't start HELP!!!!!?

I have a 1995 jeep wrangler 4 cyl. 2.5L. I cannot get the jeep to start. It cranks and tries but will not turn over. Due to the year and model of this jeep you cannot adjust the timing it is all done by the ECU. If we switch the spark plug wires around 90 Degrees it will start, but sound real rough and as soon as any gas is applied it shuts right off. Is there a way to adjust the timming on the computer or a switch to replace? Help my wife wants this out of my driveway!!!!!