Line-A/C Suction: Description
WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
4.7L engine shown in illustration. A/C discharge line for other engines are similar.
The A/C suction line (1) is the refrigerant line that carries refrigerant from the evaporator and A/C expansion valve (2) to the A/C compressor (3). The A/C suction line includes the low side service port (4).
CAUTION:
Use only seals specified for the vehicle. Failure to use the correct seals will cause the refrigerant system connections to leak.
The A/C suction line has no serviceable parts except for the O-ring and dual plane seal, low-side service port valve and protective cap. The seals used on the connections are made from a special type of rubber not affected by R-134a refrigerant. The seals must be replaced whenever the A/C suction line is removed and installed.
If the A/C suction line is found to be leaking or damaged, it must be replaced.