1999 plymouth grand voyager turns over but wont start!
 

It turns over but won't start. Just died in the middle of the road. Had it towed to my house. Replace fuel pump, fuel filter and crank sensor. It has spark and if i spray starting fluid in the intake, it starts! Somehow (I think), the fuel pump isn't staying on when I turn the ignition. All fuses and relays are good. Any help would be appreciated. Thank you!

Sounds like your needing to point your attention towards the fuel pump. First has it got a power supply as it may be the control module for it that's not sending power.

where's the control module for the pump?