V-10 engine automatic transmission, so at 1500-2000 rpm the truck surges really bad and when doing an up hill climb at low speed.

Replaced:
Egr valve, throttle position sencor, all cops, plugs, cleaned injectors, new fuel pump, fuel filter, replaced crack vacuum hoses, mass air flow sencor, aftermarket intake, cleaned out catalytic converter.

Had it running better for one day then starting acting up again so not sure what is going on, no engine codes are popping up.

 

Hey bud try decribing symptoms a little better. Year of truck would help too. When its surging are the rpms fluctuating at all do they raise up then go back to normal? if so it may be a transmission issue. Is the engine sputtering or missing? Maybe someone will chime in for ya and give some guidance. It sounds like you're in the wrong path right now by throwing parts at it. Maybe try taking it to a good ford dealer that you trust.

 

A good independent shop would be less money and more likely to have someone that's really good at diagnostics. IMHO.