Plymouth Grand Voyager Fuel System

I Had Problems With Keeping It Running Smooth. I Replaced Cam Sensor And Knock Sensor. Still Had The Same Problem Same Code, Loss Of Cam Etc...

The Fuel Pump Will Turn On One Time Then Won't Turn On But It Does Get Fuel.

I'm A Bit Stumped, The Car Runs Pretty Well And Just Has A Few Little Hiccups. When I Open The Gas Tank It Hisses From Being Under...