With reference to this Factory Air Heater Control Valve - part# 74621, the heater control valve on your Ford Expedition should be located in one of the heater hoses to regulate coolant flow to the heater core. The valve is usually vacuum-controlled, which is operated by controls on the dash. For any further assistance, please visit your nearest Advance Auto store or call us directly at 1-877-ADVANCE (238-2623) and one of our representatives there would be more than happy to assist you.
Answered on 1/5/2013 by Vincent from AAP
were is the heat control valve located on a 2000 ford f150 4x4
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