If you drive during the summer, you want a working air conditioner. If your AC isn’t working properly, you may wonder if it is a problem with the unit itself, if it just needs recharging or if something else is wrong with your vehicle. Before you purchase an AC manifold gauge set and components, you should know the signs that your AC is bad.
A properly working AC unit will produce cold air. Therefore, set your fan to its maximum revolution position and your AC to its coldest setting. Warm up your engine. Then test the temperature of the air in your vehicle. Is it cold or is it only cool? It could even be warm.
Before you add Freon for car to your system, consider the airflow. Have you noticed weaker flow from your air vents than you experienced previously? This could suggest a blockage or defective AC unit. In addition, you may smell burned wire, mustiness, mold or other odors that are uncommon for your vehicle. If your vehicle begins smelling when you turn on the AC, get it checked immediately because you may have leaks that could make your family sick.
You should hear the compressor turn on and the air flowing into your vehicle. However, your AC shouldn’t make additional noises. For example, listen for rattling or ganging that could clog or impede your fan. Your AC also shouldn’t hiss when you turn the vehicle or the AC off. You shouldn’t hear clicking noises when you turn off the AC. Also, consider the cycle, is it too frequent?
Charging your AC system should be part of your regular maintenance, but your car should only need recharging every few years. Not only does this keep your system working properly, keeping you cool, but it also extends your engine life and fuel efficiency. If you have to recharge your system more than once per year, you may have leaks or defects in your AC system. Leaks can cost you even if you need a simple recharge of R134A refrigerant.
First, check the air filter for your vehicle’s cabin. Make sure it doesn’t have any clogs, and change it if it has significant dust and debris inside it. Also, search your AC pipes and fittings for oil residue. While your vehicle runs, open the hood of your vehicle and make sure your compressor runs properly. Make sure it is clean and free from debris. Then, check your condenser for debris and obstructions, such as leaves and bugs. Observe your cooling fans on your radiator and condenser. Are they working properly when your air conditioner is on? Test the pressures in your AC system.
As with most vehicle issues, it is best to detect AC issues early. As soon as you see, hear or smell a problem, get your vehicle into the shop. Also, you can detect potential issues early if you follow a regular maintenance plan. A strong maintenance routine also protects your vehicle and keeps it running in optimal condition. Ask a local mechanic or reputable parts supplier about how you can prevent or detect AC challenges early.