Troubleshooting Your Car’s AC Problems

Although Clackamas, Oregon, isn’t known for high heat and humidity, people want the air conditioners in their vehicles to work correctly when the days are warm. They have to commute to and from work, run errands, and complete other driving tasks. They need a reliable AC so they arrive at their destinations without being hot and sweaty. What should they do when the AC in their vehicles goes out? 

Common Problems Seen with Vehicle Air Conditioning Systems

Many things can go wrong with a car’s air conditioner. The driver may notice weak airflow or warm air coming from the vents when the system is set to cool. Unusual noises are always concerning. Before heading to a shop specializing in auto repair in Clackamas, OR, drivers might want to check a few things. They often find that there is a simple fix to the problem they are experiencing, and they won’t face a repair bill. 

Cabin Air Filter

The problem might be a cabin air filter. If the filter is clogged, airflow is restricted. Fortunately, replacing this filter is easy. It’s usually behind the glovebox or under the hood. Locate it, remove it, and replace it with a compatible filter. Check to see if the AC light illuminates and the blower fan works at all speeds. 

Refrigerant Levels

If the above steps don’t fix the problem, it’s time to check the refrigerant. Many auto parts stores sell a gauge kit that measures the pressure in the low-pressure port, marked with an L on the AC line. This reading should range between 25 and 45 psi when the AC is running. If no gauge kit is available, look for residue near the AC lines or the compressor. It may be possible to recharge the AC using a kit purchased from an auto parts store; however, if the problem persists, it is recommended to take it to a reputable auto repair shop for further assistance. Environmental regulations often require refrigerants to be handled by licensed technicians. 

AC Components

The problem might lie with an AC component. If there is no click when the AC activates or it makes a rattling noise, the compressor may be faulty. A clogged condenser leads to reduced airflow, and this part can be cleaned with a garden hose to remove any debris. Mold in the evaporator can cause a musty smell, and this mold can be removed with a disinfectant spray for vehicle air conditioning systems. However, specialized tools may be needed for these tasks, so consider that when determining whether it would be easier to take the car to a certified repair shop. 

Electrical Issues

Certain problems are the result of electrical faults. Check the fuse box to see if the AC fuse is blown and replace it. Relays could also be the issue. Inspect those and swap any bad ones with new ones. However, a licensed mechanic should address wiring problems to avoid additional damage. 

If a problem persists after DIY repairs, it’s best to have a licensed mechanic diagnose and fix the problem. While attempting these fixes saves time and money, complex issues are best left to the pros. They will get the AC working again quickly so the driver can have their car and be comfortable when in it.