ranger starts then dies

2000 ranger starts fine then dies. If you hold throttle open after it starts it runs fine but not idle. If you hold throttle open and rev it up after a minute or so it will idle OK. This does not happen all the time, usually cold engine.

Clean throttle plate and IAC .

I have changed the throttle position sensor and the EGR valve. I changed the EGR because when I tapped on it the truck started,,,,,but the IAC is also right there and may have gotten the tap as well......... I also had changed one of the oxygen sensors for faulty heat. I cleaned the throttle plate. I am thinking about the IAC even though I have not gotten any fault codes on it. Does it clean easily or should I just change it?

Clean it with carb cleaner but don't get the cleaner in the electrical part.

After cleaning it lubricate it with some light machine oil or 5/30 motor oil in each of the two cavities. If you can spray it with some WD-40 you won't have to spray with cleaner it will clean and lube it at the same time. I would try cleaning it before changing it. It runs about $65.