How to replace freon in car ac

The compressor takes low pressure, gaseous, r-134a, compresses it which creates heat , then sends it to the condenser, where the heat is dissipated to the outside. Share Tweet Pin. To high or to low and the system will shut off.

Replacing Freon in an Air Conditioner

The photos depict the location of the fill port on two different late model engines. Step 5: To test the pressure, turn the vehicle off and locate the low side pressure port.

The compressor has a clutch at the end of it that should be spinning with the accessory belt when the AC is on high. Get a quote.

How to Recharge Your Car Air Conditioning

Look for these pulleys moving. Otherwise, simply aim to recharge the system fully the first time through. Please see our terms of service for more details.

how to replace freon in car ac

Also adding refridgerant to an empty system is something that needs to be left up to the professionals as the system needs to be properly vacuumed down and kept under a vacuum until refridgerant is added.

For most vehicles, the low pressure side fill port is located on the left side of the engine bay.

How to Recharge Your Car's Air Conditioner

Be careful not to pull the trigger at this time as this will release refrigerant from the AC system into the atmosphere. The compressor won't engage! The system is sealed from the outside, and filled with a working fluid, in this case r-134a.

how to replace freon in car ac

Return to the inside of the car and check the temperature. Look to the back of the engine bay called the firewall.

how to replace freon in car ac

If it still will not turn, it is likely broken. Begin to monitor the gauge by watching for the AC compressor to engage the clutch. However, if you search the engine bay and find a sticker stating that the system has been converted for use with r-134a, continue. Refrigerant does not evaporate in an airtight system, so air must be leaking in. Important to know: If you have a car that was manufactured prior to 1993 and are having problems with the air conditioner, it is best to take it to a professional mechanic to diagnose the problem and have the system recharged correctly.

Adding Freon to a Car Air Conditioner

If the issues only began after the AC was installed, it may be possible that the issue developed while the AC was being worked on.... Follow the lines from the compressor. Car shakes with air conditioning AC on The air conditioning compressor adds significant load to the engine.