FORD EXPEDITION HEATER NOT WORKING

The Fan Switch Only Works On High There's No Heat In The Front Of Vechicle Heats Work In Rear

My 97 Expedition Heater Stopped Working Now It Rumbles Very Loud And Dosent Seem Like It Is Getting Gas It Will***** When I Press On The Gas

Why Would The Heat Istop Blowing What Would I Look For To Fix This Problem There Is No Water In The Floor The Blower Blows Good There Is...

Hello I Have A Question My Heater Turns On And Blows Out Hot Air And Then It Gets Cold After Two Minutes And Stop Blowing The Hot Air What...