91 mighty max surging idle and power loss under throttle

[srt 4guy]

So I am new to forum but this is my second truck. CEL keeps coming on and it will begin to surge.. then under throttle it will cut out like I just took my foot off the gas. It has new plugs wires cap rotor and fuel filter. My buddy at oreilly let me try on a maf, and a tps. Neither one helped. As soon as it gets to temp it will surge. But not all the time. Yesterday it ran fine. Im lost. Please help!

[Merrill]

"Shotgunning" is known as throwing parts at your vehicle without diag.

If your CEL is on, get the code and fix the problem. Its telling you what is wrong with it.

[mightydrifter]

I have similar problem but mine sounds like my 4g64 is cammed out at idle.
however I know my fuel pump is going out and I feel like its not giving it enough fuel
so I'm replacing it tomorrow if the weather holds up.

[mightydrifter]

So I think I figured out my cam like problem and loss of power.
my cat in my exhaust was clogged I guess so you might try beating on yours with a wrench or something to see but I just unbolted it and removed the back half of the exhaust and it ran 10x better.