1997 Ford Explorer Q&A
1997 Ford Explorer Question: heater control knob
It is possible that the heater control knob on the dash of your 1997 Ford Explorer is damaged and not turning the shaft in the control head when turning the knob. Pull gently on the knob to see if it will come off the shaft. If it comes off look inside the back to see if it is damaged and also try turning the metal shaft on the control head without the knob attached to see if the temperature changes. - Oakman
My heater only blows cold air and when I turn the knob to heat, it makes a knocking sound behing the dashboard.
Now that winter is here my blower will only blow cold air. There is a "clicking" noise that come from under the dash. When I turn the Setting knob to cold it is quite--when I adjust it to a warmer ...