Adding Freon To Car Ac With Gauges

Most 1994 and older vehicles used r12 as the original refrigerant if the vehicle being serviced is still using r12 it must be evacuated and retrofitted.

Adding freon to car ac with gauges.

The only way to know if your system is properly charged is to evacuate it and add new refrigerant with a scale. There is a very limited amount of refrigerant in the system and when even small amount leaks the system can no longer function properly delivering lukewarm air instead of cold air. This will indicate that your car air conditioner has been recharged. Stringing the can onto the hose enables you to gradually finish off the ac framework with fluid refrigerant once the can is introduced hold the can upstanding and press the trigger for 5 to 10 seconds to add the refrigerant to the framework.

If hooking a can of refrigerant with a single hose gauge to the car you will use the low side. If hooking a set of gauges to the vehicle you will use both. Note about charging liquid. In the simplest form you ll know when you need an ac recharge if your ac starts pumping warm air instead of cold.

Turn on the car and run the air conditioning for several minutes paying attention to the pressure on the gauge. In other words if your system is low on charge you can t use your gauge set to add refrigerant to get to factory specified fill capacity. An a c system in your car that is blowing hot air instead of cold air is major inconvenience. Recharging your ac means adding more refrigerant to your ac system to allow the air to start blowing cold again.

If both gauges read below normal while the engine runs and at maximum ac it means a low refrigerant condition exists. It should latch on easily. With the engine running and ac on and an ambient. Part 2 of how to properly charge up an auto r134a ac system using pressure gauge and off the shelf 12 ounce r134a refrigerant.

An air conditioning manifold gauge set is a must have tool for anyone who is interested in performing some basic system work at home such as checking pressure in a c lines determining if there s a leak adding small amounts of refrigerant or performing a complete evacuation and recharge. To charge the system with a can of freon the yellow middle hose on the gauge must be connected to a freon can. How to tell if your car ac needs freon. Step 3 freon pierce the can of freon turn the gauge valve to release the freon continuing until the pressure is as it should be.

Look at both gauges. Some corrective action steps can be taken by the do it yourselfer though other. Read the car ac gauges. When your car s air conditioning ac begins to lose power and doesn t blow cool air it may be time for an ac recharge.

The hose end has a twisting puncture valve on it that connects securely to the freon can.