Many people think A/C service port caps are just “dust covers.” In reality, they do more than keep dirt out. A good cap: protects the

Your A/C system has service ports (the connection points used to service and recharge the system). Inside each service port is a small sealing component

After an A/C component is replaced condenser, compressor, hose, expansion valve, accumulator/receiver-drier, the system has usually been opened. Once a system is opened, air and

When your car A/C isn't cooling well, the most common impulse is: "Just recharge it." Sometimes that seems to help, briefly. But if the system

The Most Frustrating A/C Problem: It Works… Until It Doesn’t. Few car problems are as annoying as inconsistent A/C. One day it feels fine. The

It Looks Like the Same Job. But It Isn’t. If your car’s A/C starts blowing warmer, the most common thought is: “It’s probably low, let