your VP is most likely dead...or maybe your apps is out of adjustment...you still have a stock style lift pump??? if you do...those can't keep up with the aggressive fueling that the Edge uses...HIGHLY recommend a FASS or AirDog!!! especially if you plan on playing with your edge on setting 4 or 5....it will drain your stock lift pump to 2-4 psi if not 0psi...and that will kill your VP in a heatbeat....I've already been down that road and learned the hard way..... A new VP...and a FASS 95 HPFP later....17psi idle...and 10-12psi WOT...
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2000 LWB 2500 4x4 Quad Cab 24v, 5-Speed, Edge Juice w/ Attitude, AFE Stage II, FASS 95 HPFP, Valair Ceramic Clutch, GDP BigLine Kit, BD Stealth Plate, FBD 4" turboback Dual Exhaust.