Originally Posted by
pioneer4x4
Check fuel pressure. This sounds very typical to a failing fuel pump, lose tolerances when warm. If you fill up with a fresh tank of gas, it may get better for a few minutes. If so, that is more evidence, the cold fuel cools the pump.
We originally thought that but I ran a bottle of cataclean out of hopes it would catch something and ran fine until fuel up and started up wonky at the pump. Is it still possible it's a fuel pump?