I have a 2000 cummins and it has a new vp44 and air dog, also new crankshaft sensor. When idling it will miss and cut out, anything over idle it runs good, could this be a Cam sensor? or injectors? Im stumped, any help appreciated....

 

Have the valves ever been checked? How many miles on the truck? If you have gauges on the truck what is the fuel pressure doing at idle? Sorry for the questions just need more input to answer. It could be an injector issue. Any codes showing up?