How to fix leaking ac in car

A car air conditioner in a car ensures a comfortable ride for the driver and passengers. Therefore, it’s important to ensure that the AC works properly and yields optimum cooling. In case the car’s AC is not cooling properly, then you should check the causes of low airflow. A car air conditioner leak is also one of the prime reasons or a bad AC compressor 

Besides, if you know the basic functioning of the cooling system in your vehicle, then you might be able to fix the leak yourself.  Read on to learn AC leak repair, but before that let’s learn how to detect air conditioning leak in car: 

How to Detect Air Conditioning Leak in Car 

Here detailed are ways to determine some major car air conditioner leaks that occur in different parts of the vehicle:  

Inspect Visually:  If the leak is slow, you should then look for refrigerant or PEG oil residue in the compressor, refrigerant lines and compressor. 

Spray Soap Solution: Prepare a soap solution in a spray bottle and spray it on all the internal parts, after completely charging your car’s AC. If any of the pipes or components are ruptures, bubbles will appear over there. This technique, however, does not detect chink on the front seal of the compressor or evaporator. 

Use Black Light:  Check refrigerants under black light, as a few are mixed with a UV dye. But, black light does not detect car air conditioning leak on the evaporator or compressor front seal. 

Sniffer Device: An AC leaking in the car is easily detectable using a sniffer device. The device can spot the refrigerant’s chemical particles, but make sure the air conditioner is clean before using it. Moreover, test for leaks in an area with no air and dirt, as these elements can affect its performance and yield wrong results. 

Now that you know how to detect air conditioning leak in car, let’s learn how to fix AC leaks. 

How to Fix Car Air Conditioner Leak 

A car air conditioner leak can be fixed easily by yourself if there is a refrigerant leak. Make sure you buy the right auto accessories and parts in the UAE and tools to fix AC leaks in the given scenarios:

• A small and slow leak can be fixed using a leak sealant in the cooling system. 
• In case of a large leak before pouring refrigerant, you will need to set the air conditioner into a vacuum. 

The two approaches for car AC leak repair are detailed as under: 

How to Fix a Small and Slow Car Air Conditioner Leak

A small AC leaking in car will gradually affect the performance of the car air conditioner and eventually, it will stop working. Therefore, use a leak sealant to fix small leakage. This is a cost-effective, hassle-free and fast method to repair small and slow leakage. 

A leak sealant is added to the car air conditioning system and mixed with refrigerant on a low-pressure line to seal up the leakage. 

How to Fix a Large Car Air Conditioner Leak

If the leak is large in the car air conditioner, the leak sealer will not fix it. For this, you will need to follow the given steps. Make sure you buy auto parts and tools that can help repair AC leaks properly. The tools and parts required are refrigerant, gauges and vacuum pumps. 

Step 1:

Vacuum down the car air conditioner before adding refrigerant. AC in a vacuum can help determine other leaks (if any)

Step 2:

Fix the leaking part, if it’s bad simply replace it. 

Step 3:

After replacing the worn-out part, add refrigerant back in the AC system while it’s in a vacuum state. 

Ensure to add the right amount of refrigerant, else the car AC won’t work and overfilling may damage various parts of the vehicle. 

It is worthy to note that every car functions at a certain pressure, so when adding refrigerant use gauges to pour back in the system at accurate pressure. Details related to car pressure are available in the manual provided by your car manufacturer. 

The core of the above guide is that many small and slow air conditioning leak in car can be fixed using a can of leak sealant and a hose. Whereas, large ones the damaged part causing the leak, need to be replaced and pour back the refrigerant. 

Whether you plan to buy a new or used car in the UAE, then this guide might prove helpful in the long run. Now you know that to find and fix an AC leak in cars is doable at home, only if you know the basic functioning of the vehicle and the cooling system. However, if you are unsure because low or no cooling could be due to a bad AC compressor as well. Hence, it’s best to get professional assistance to avoid any inconvenience or expensive repairs. The professionals at the service centre can check the pressure in car AC, detect leaks and fill refrigerant.