This is really getting on my nerves. I have a 95 F150 5.0. I started having this problem about 2 months ago or longer,the issue is a VERY rough idle when its cranked. Its seems like its choking out on me. The battery gauge will go down when it starts to choke out, and the entire front of the truck shakes...like its starving for gas or something. It has to be cranked like 10-15 mins before i leave and warmed up just so it wont do this on the road( which it will hesitate badly if its not warmed up prior to departure) Things that have been replaced are the 02 censer...the idle air control valve, Fuel filter**( fuel filter was replaced by my mechanic**..I replaced the others myself. and a complete tune up new wires plugs. I do also have a problem w/ rusty looking water in the radiator, i dont know if that may be causing any of this (doubtful) but i was planning on getting a can of radiator cleaner and flusing it myself...besides that this is a very irratating problem and any help would be gratly apprecaited...oh, and My mecahnic could NOT run the codes because of it being a 95, so i bought one and it told me that the 02 censor was bad, besides that...i'm lost. The only 2 things i can think of is a ground cable connection problem, or the FI needs to be cleaned...Someone please help, Thanks so MUCH!!!!!

 

Double check the hose going from the pvc to the back of the iac for starters.

 

Its a 5.8 EFI...sorry about that. and theres nothing of a hose coming off a pvc to the iac.....any other ideas...please help. thanks