Now what?

[Little Red]

My 2000 F150 w/ 4.6 just developed a new problem. It won't idle when cold. The code reader says the IAT was 43 deg. and the ECT was 39 deg. When warmed up it's ok. IAC?

 

[Fordisthebest30]

idk. my truck is having the same problem. I tried cleaning the IAC and MAF. I replaced the coolant and engine temperature and nothing. I clamped down the air intake a little better and nothing. It could just be the cold cause when it gets warmer outside i cant even hear it idling