1998 4.2 fuel issue

Hi everyone I'm new here so work with me on this. I have a 98 150 manual with a 4.2, I'm having problems with hot starts. it acts like it has very low fuel pressure after restarting it from driving for a period of time. when it does this it runs like complete **** and has half the power it should until I shut it off and let it sit for a little bit. I have replaced the fuel pump, relay, and regulator but I still can hear the pump cavitating before I start it. I have cleaned the maf,replaced plugs and wires, and multiple fuel filters. I pretty much have done everything I can without a scan tool.

I'm worried its the pcm over working the pump. PLEASE HELP!!!!!!!!!!!!!