Freestar V6-4.2L VIN 2 (2004)
Hose/Line HVAC: Description and Operation
Auxiliary Climate Control
UNDERBODY AUXILIARY A/C LINES
NOTE: An in-line filter is installed in the auxiliary evaporator inlet line at the floorpan spring lock coupling connection. A restriction in this filter
may cause misdiagnosis of a failed thermostatic expansion valve. This filter must be inspected before a new thermostatic expansion valve is installed.
The underbody auxiliary A/C lines carry refrigerant to the auxiliary A/C evaporator inlet, and away from the auxiliary A/C evaporator outlet. The
auxiliary underbody lines have the following characteristics:
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The front auxiliary A/C evaporator inlet line carries high pressure refrigerant liquid from the condenser to evaporator line to the tube-in-tube type
auxiliary evaporator line.
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The front auxiliary A/C evaporator outlet line carries refrigerant vapor from the tube-in-tube type auxiliary evaporator line to the front evaporator
outlet line.
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The tube-in-tube type auxiliary evaporator line combines a high-pressure tube and a low-pressure tube into a single assembly. The high-pressure
tube is located inside of, and is separate from the low-pressure tube.
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Four short jumper lines connect the tube-in-tube auxiliary evaporator line to the auxiliary evaporator inlet and outlet. The jumper lines are
connected at the floorpan bracket.
