why will my van not crank? on 2002 Dodge Ram Van 1500

i have put a fuel pump, a water pump, a crank shaft sensor, checked all the fuses, made sure it has gas , put a new distribtor on it ....don't no what else to do please help with info asap....thanks

1 answer
If you mean it cranks but no start it can be the computer. mounts on firewall
above engine with three bolts and has three plugs.Cost $289 exchange
with lifetime warranty.Do you have any other symptoms ?