I just fixed a cylinder #2 mis by throwing parts at it. I'm sure I didnt need to replace a few that I did anyways. . Now I have a p0511 iac circuit Code. I cant afford to throw parts at this issue. Any ideas on what might cause this code. The truck idles like crap. I have no throttle response and uphill is a nightmare it will not go I either have to floor it and be at high rpm or let off and crawl up slow.my stft is at 99.2 btw. Any help would be greatly appreciated. Thank you
New parts
Fuel filter
Spark plugs and
wires
Coilpack
MAS
IAC
FUEL INJECTOR CYLINDER #2

 

So I got rid of p0511code by unplugging and removing iac,tps,and mas. Cleaned the connectors on both ends and cleaned all three parts aswell. No codes at all now still running rough