Got a '99 and its all stock. A month ago it became difficult to start in the morning. Had to turn over a lot before it would fire up then the rest of the day it would be fine. Last week it finally refused to start altogether. Since then I replaced the fuel filter and it appeared the transfer pump was bad so I replaced that. Still can't get it started. I have fuel up to the VP44 but I can not get fuel at the injectors. I tested the Fuel Stop Relay and its OK. I checked the voltage at the connecting plug to the VP44 and it shows 12 volts on one terminal, 4 volts on another and 3 volts on still another.
End result is I don't know how to tell if I have a bad injector pump or a bad ECM or something else.
I bought the truck only a year ago and don't have any idea of its history. Has been getting good milage (21) and running smooth until this all happened. I did notice that the VP44 has been replaced in the past with a remanufactured.
Can any of you much wiser people tell me how to ensure what part is bad???
(I hate to think I might have to go back to my '76 gas dodge, 3 mpg #@$%!)
End result is I don't know how to tell if I have a bad injector pump or a bad ECM or something else.

I bought the truck only a year ago and don't have any idea of its history. Has been getting good milage (21) and running smooth until this all happened. I did notice that the VP44 has been replaced in the past with a remanufactured.
Can any of you much wiser people tell me how to ensure what part is bad???
(I hate to think I might have to go back to my '76 gas dodge, 3 mpg #@$%!)