96 plymouth voyager 3.3L shut off while driving, no codes, have replaced coil, cam sensor, and crank sensor, still no spark... any ideas?

Check for sparks. If no sparks, test crankshaft sensor. If sparks good, check fuel pressure at injector rail. Not sure which engine you have...tbi versus mfi.
Do It Yourself Diagnosis and Repair

Did you test power an grounds ? B+ to coil pack . Check for battery voltage at dark green with orange stripe wire at coil pack . No B+ voltage there you need a ASD relay - auto shut down relay !

Have you looked at the ignition module, or and ignition switch. Not the key switch} ignition switch.

are you getting any trouble codes? if you are maybe getting a P320 for crank sensor, try replacing the Cam Shaft Sensor, this 2 sensors communicate but the ECU registers it as a Crank Sensor code. Good Luck.

Have your ECM (Computer) checked out, it coiuld be bad.

WELL I AM LOOKING AT AUTOMATIC SHUT RELAY BAD OR THE BAD COIL POWER TRANSISTOR.YOU WILL NEED A SCANNER TO TELL YOU IF YOUR CMP SENSOR OR CKP SENSOR IS WORKING.

Check primary voltage at ignition coil and fuel injectors, engine cranking, use a test lite, dark green wire with orange tracer. If no voltage, that comes from asd relay. Some makes and models if the computer doesn't see the cam and crank sensor signals, the computer won't ground the relay.
You need to do some testing.

Have you tried hooking up an OBDII tester to see if you have codes ?

Did you check for power to the coils ? if so check the crank pos sensor.

cam sensor fires the injectors to synchronise injector pulsing with the spark at the spark plugs.. U need to probably change the crankshaft sensor (around the crank pulley) as the crank sensor is what controls the ignition spark.
hope that does it.
:)