I'm in the same position with a '93 century, had the same problem with my old '89 olds cutlass with the 3.3 or 3300 motor. the best I can tell so far is that one of the parts previously replaced is bad (you can get the ignition modular checked at O'Reillys or simillar) or there is a short somewhere in the wiring - posibly the fuel pump or ignition systems. Sorry that's where I'm at.
it keeps the firing sequence
the ignition modular is on the driver side 6" from firewall
The ignition module should be attached to the distributor with two small machine screws.
on the distributor or near there
try under the front passenger seat
mounted next to the ing coil on the same bracket
I believe under the distributor . It should have a plug attached to it.
Fuel, fuel pump, engine control module, spark controller.
Of or pertaining to mode, modulation, module, or modius; as, modular arrangement; modular accent; modular measure.
Difference between modular and non-modular bricks
additional ports can be added in modular routers.
behind the coil packs directly below the front exhaust manifold. takes 5.5mm socket