"Dodge 01 5.9 Starts but will not excellerate
 

Code is P0216 and P0251 and P0252. How the heck do you fix this?

Do you have any mods? Do you know what your fuel pressure is? All of those codes are for the injection pump and you will probably have to replace it. But first check your battery terminals and grounds for corrosion. Here is some more info for you VP44 Diagnostic Good luck