F 150 2WD Pickup V8-4.6L CNG SOHC VIN 9 (1997)
Heater Core Case: Description and Operation
The heater system is blended air system, receiving outside air through the air inlet, which is connected to the upper cowl. Air is directed through and/or
around the heater core, mixed and discharged through outlets in the plenum assembly to the floor, panel or defrost nozzles.
