P0102 Chevrolet -c2500 5.7l

Question

the p0102 code is showing on my handheld but my truck starts surging when it is warming up and at 45&55mph the truck seems to surge or misfire when i let off the gas what could this be i have changed all most everything on the engine new distributor ,cap, rotar,wires,sparksplugs,coil,cam shaft position sensor,maf sensor,new fuel pump,fuel lines,new o rings in the lines what could it be . can some one help me im lost

Answer 1

P0102 MAF sensor circuit low frequency

This can be a poor connection at the MAF. or power supply to the MAF from the IGN 1 , such as poor mating contact of the IGN fuse.Take the  fuse out and replace it and ensure that it is making proper contact.even a bad ground for the MAF can cause this condition.You may need to measure voltage for the MAF to find its solution. The PNK wire of the MAF should be at battery voltage,