sounds

Hey guys, I've seen some posts about this but not anything that sounds 100% like my problem. I live in Phoenix, AZ and drive to Flagstaff, AZ quite a bit. Whenever I hit around 3500 RPMs +/- 500 RPMs, there's a loud screeching noise I can hear. My transmission was rebuilt 6 months ago so I know...

...seems to emit from somewhere behind me, lasts about 1 second. Has happens three times, once when sitting at idle. So, some kind of air purge? Gas tank pressure relief? Or.......????

Hey so there is this squeking noise comming from the belt area of the engine. It sounds like a bad serpentine belt but it happened rather fast, (over the course of 5 days), granted those 5 days where after a 300 mile trip home... https://www.youtube.com/watch?v=KleYbvfDSgM&feature=youtu.be...

I hear this popping sound [a single pop] when I accelerate gently sometimes. Sometimes I hear it when reversing too. I don't know much about cars and don't want to take it to the dealership unless it's a serious problem [replicating stuff to dealer techs is a pain]. I have a 2011 Ford...

So, I've checked my pads and shoes on my brakes, and all seem to be fine, yet when I press down on my brake pedal, I get a wooshing kind of a sound, even when my explorer is in park. When I am driving (or was driving I should say) I get the same sound, and it feels like only my front brakes are...