First, Did you change the fuel filter when you did the pump?
At this point some odd things are going on and I can't tell yet if it is one issue or two. When crazy things happen like a fuel gauge bouncing around and the motor trying to shut off, two things that have nothing to do with the other I start thinking the PCM (Power-train Control Module) IE the computer has failed.
Lets make sure it is two issues and not one, though the gas gauge bouncing around could be a bad gauge or the PCM. Does the gauge ever read more gas than you know is in the tank? IE you know you have a half tank but the gauge goes up to 3/4?
At this point I would change the fuel filter if you have not. When you do blow through the inlet side. If it is plugged you will feel resistance varying from a little to you cant blow through it at all. This means it was plugged. If you feel none then it was fine, but we need to know that one way or the other.
I kind of bounced around a bit here so be careful to answer all my questions and we will go from here.
Tuesday, August 13th, 2019 AT 6:46 PM