Fan sounds like a plan taking off

07 Mur Mountaineer 4.0 V6 RWD
I have replaced the radiator a while back and now more times then not the
fan sound like a plane taking off . i idles fine and as the rpms increase so
does the whooshing sound of the fan, This comes and goes . at times i see
the temp needle increase as the sound is happening but doesnt get to high
and then settles back to normal within a minute .

I swear it is electrical the way it comes and goes , is there sensors or
controllers /i need to be looking at . everytime i bring it to the shop it never
acts up