I have a 2001 dodge ram 5.9 2500, engine was running sluggish, changed plugs wires, distributor cap, rotor cap, and crankshaft sensor, now vehicle won't start at all, I'm sure I have the wiring right

Are you getting spark at the output of the cap? If so its your coil wire

What fault codes did you receive on the engine computer scan test.

Distributor Ignition Pickup. starter switch , computer

check the camshaft position sensor inside the distributor. remove the distributor cap. take a volt meter and use either a paper clip or a small pin to insert into the back of the distributor connector (yellow wire). connect the positive side of voltmeter to yellow wire. rotate engine with starter until the rotor is pointed toward the rear of vehicle. with the ignition on( engine not running) the voltmeter should say 5 volts. if there is no voltage check the voltage on supply wire . with the key on there should be approximately 8.0 volts. if voltage is presant, install the probes of the voltmeter into the signal wire (tan/yellow) and crank the engine over to observe the voltage reading. the meter should read 5.0 volts indicating that the ignition signal is pulsing properly. if the camshaft sensor fails either test (replace it).

swap the asd relay with the fuel pump relay and see what it does then

Did you replace these: IAT(intake air temp) sensor----
CTS(coolant temp) sensor-----
MAF(mass airflow) sensor-----

First things that came to my mind.

Good luck !

If the engine seems to run fine over 1450 RPM maybe there is a vacuum hose leaking or EGR valve is slightly stuck open. Any help from the OBD II trouble codes? Or is there simply no MIL and no stored information in the OBD II computer read at the local parts store through the connector by the drivers knee?

you have pcm problems or ASD relay problems.they both control the fuel and ignition.

CHECK THE THROTTLE CABLE . IS HOLD THE TPS SENSO ON . MAP SENSOR IS OK

Hi
Here is a diagram.