fan making loud noise

[rasputinlv]

Hi guys.
I didn't drive my explorer for the month. Battery got drained and I had to jump start it. After reconnectiong I was in some kind off test mode. Now when I'm driving fan, or I think it's fan, making loud noise. Sometimes it stops, but most of the time it's making noise. Should be fun even working when I'm driving?
Any suggestion would be greatly apppreciated
Thanks

 

[imp]

Hi guys.
I didn't drive my explorer for the month. Battery got drained and I had to jump start it. After reconnectiong I was in some kind off test mode. Now when I'm driving fan, or I think it's fan, making loud noise. Sometimes it stops, but most of the time it's making noise. Should be fun even working when I'm driving?
Any suggestion would be greatly apppreciated
Thanks

If it sounds like an airplane propellor is under the hood, then look for a seized or bound-up fan clutch assembly.

With engine OFF, grasp fan blade with your fingers, and rotate it. If it BINDS or feels very difficult to turn, you've found the trouble. It should turn freely and smoothly. imp

 

[rasputinlv]

Yes, it does sound like that. I will check fan.
Thanks for help.