Underbody Auxiliary A/C Lines
WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.
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:
- The front auxiliary A/C evaporator inlet line (19D603) carries high pressure refrigerant liquid from the condenser to evaporator line to the tube-in-tube type auxiliary evaporator line.
- The front auxiliary A/C evaporator outlet line (19D602) carries refrigerant vapor from the tube-in-tube type auxiliary evaporator line to the front evaporator outlet line.
- 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.
- 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.