Just a few questions I was wondering about starting my 05 F-150.

Anyone have times when they start the truck and can here like a loud fan running that goes away after a few minutes? I've always wondered what that was but never bothered to ask.

Also... sometimes on warm days when the truck hasn't been started, it will turn over, but it sounds like it is just barley turning over, and then idles fine. Any ideas?

This is the 4.6 btw.