I have a 91 Plymouth Voyager 3.3L I'v replaced the Fuel Pump, Coil Pack, Crank and Cam shaft position sensor and it will not start. When I turn the Key I can not hear the fuel pump. what else could it be>

check cam sensor or pickup coil in distributor.

Check your fuses.

Kind of sounds like a power control module.

try changing the crankshaft position sensor but first for the fuel turn the key and listen for the fuel pump to kick on if it does and it still wont start find the gas line to the fuel regulator and pull it off and have someone crank it if it has a good pump it will have good pressure and as for the spark if its not getting spark im guessing it has one coil pack together its computerized so it could of gone out but anyway check the fuel stuff first and then change the crankshaft position sensor im almost competly sure that will fix your problem

Is it cranking at all? If it is, the next to check is crank shaft position sensor

not sure what size motor you have? is it getting fuel? have you checked the fuses? if so there is a cam sensor that can cause a no start on the 4 cyl the 3.0 and the 3.3. hope this helps

did you try the crank position sensor?

If your voyager is equipped with one---- change the ballast resistor, it's an oblong white ceramic block usually on the firewall, or on the inner fender well, it has 2 wire connections, one on each side.

You did mention the oxygen sensors or the PVC valve..

I would try replacing them..

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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.