Mustang 2007 gt staring problem?

I'm not sure what it could be, but you could start by thinking about what's in the middle of the car.

The middle of the car has the transmission, the gas tank sorta, the fuel pump, the starter, and the drive shaft.

The person above suggested it might be the starter. That could be a good place to look. Also, you mentioned a fan type noise. The torque converter works like a fan. Actually, that's almost exactly how it works. Make you can hear it when you start the car, but it goes so fast when it's running that you can't hear it.

Also, google your problem. some cars have common problems that the manufacturers have done recalls or Technical Service Bulletins (TSB) on.

only get some tubes with distinctive hues in them. Blue, crimson, green, white , and so on. that's going to finding freakin candy. that's what i might do , however the different colour is prohibited in my state so. i might have only white showing. Ethier get crimson, or White, or Blue. Or all of them. Its a frustrating chooice. sturdy success .

Make sure your starter bolts are tight.