the heat in my 2002 ford explorer stopped working and even when the heat is in the off position, if i turn the dial to hot, it just makes a thumping noise without the heat even being on. please help
when the heat is off, if I turn the dial to hot, without even turning the heat on, it makes a loud thumping noise. when I turn it to cold it stops. Also, the heat doesn't get hot at all. my transmission is failing, could this be the problem