my front sound it going to fall in part.thank you.

As frustrating as it is, it's impossible for us here to be able to figure out what is making such bad noise in the front of your Flex. Only a physical inspection can be performed - first hand by a skilled technician - to find out what is going on with the vehicle and see where the noise is originating from. Use the "FIND A SHOP" feature above to find a shop near you.