VPC York compressor Dealer AC, R134A Fill Options

[jdamiano]

My car has the dealership installed VPC AC. I purchased the car 5 months ago and the AC doesn’t blow cold. I have no history on it. Still had a little pressure in the system. I’m thinking of charging it with R134. Has anyone done this and know how if it will work and how much I should try to put in the system?

[914forme]

Well in reality it does not matter what your using you will need to do the follow.

Replace the dryer
Assemble the system:
Draw vacuum and make sure it holds for a period of time, that period is up to you.
If it leaks fix the leak
Rinse and repeat until it can hold vacuum longer than you can hold your breath.
Install system in car
Draw vacuum again, and test system, you may have to loop back. This did add a few steps but makes it a lot easier to fix issues and find leaks when you can flip things in 3D
Add the oil associated with your choice of Freon in the approbate amount for your system
Start the car
Fill the system to the approbate pressure for the ambient temperature
Check the system for proper functionality

Drive with out your back and undercarriage getting all swampy.

Now the highly recommended option.
New Rotary Compressor - why less load on the engine than the engine driving another piston engine. More efficient operation, and if you wanted to make the system better you use one of the more Modren units that is constantly on, and varies refrigerant flow based on need. Makes the system even more efficient. Or switch over to an electric compressor system, these can be $$$$ and I have not seen a good DIY on the controls of these yet.