Have a 93 Diamante. 3.0 liter. Problem started with #1 plug not firing, remaining 5 OK. Changed plug, wire and cap, no better, no code being thrown. Now we've progressed to no fire to any plugs and still no code. Have changed out coil and distributor. It might staret and run for a few seconds and then die completely. Fuel pressure OK. It's a 93 but it's cherry and I hate to let it go when it's probably something simple. Any ideas would be greatly appectiated.

 

It was an igniter module, for those who might have a problem later on.

 

Have you checked the rotor when you replaced the cap? You may have a distributer timing issue as well. Good luck.