ok i went through the codes and as far as active codes in the koeo and the koer there is nothing i just get the 111 all clear

theres 2 in the code memory
542 Fuel pump open, bad ground or always on - - Power / Fuel Pump Circuits
543 Fuel pump relay or battery power feed was open - Power / Fuel Pump Circuits

im guessing i get those where is it dual tanks? both tanks work fine i use them on a regular basis.

followed the test for the IAC as well and removed the plug while runnign and the truck stumbled and idle dropped and was close to dying. thats the same thing thats happening when i put it in reverse if its idling.

i removed the valve and it looked pretty dirty so i sprayed it out good with throttlebody cleaner and it looked alot better.

still the same thing. any other suggestions??