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I did rent the correct vacuum pump and vacuumed it at 30 Hg for several hours. I put one can of ester oil and then one can of freon.
The compressor kicked on but would turn and stop just as you stated. When i tried to rev it up it was very noisy. The low pressure side was at about 90. I didn't add anymore freon because it just sounded as if the clutch was not operating properly since the clutch would spin and then stop, and spin again.
So it's possible I should add another can of freon and see what happens?
Also - you don't necessarily need to run the vacuum pump on it for hours. Run it for a nice long while until it's holding steady, then shut off the pump and see if the system maintains a vacuum for a good long while on its own. If it can't, it has leaks, and you should try to find those before loading it up with refrigerant that's just going to leak back out.
http://www.techchoiceparts.com/refrigerant-and-oil-capacities/volvoI added roughly 2 oz or so of ester. I know over oiling can cause issues as well. (So I've researched)
I only put one can of refrigerant which was 12oz so not even a pound.
I remember watching a video of filling refrigerant and I remember the low side going high to 80 or so in the video when he added the first can. Apparently the pressure lowers as you add more refrigerant? Could anyone confirm this?
Adding spec refrigerant in the morning and will report back here.
Hey All,
So i had a good experience this morning. Added the 2nd can of refrig and the compressor ran but alittle noisy. I was able to get vent temps down to 38. Low pressure reading down to 30.
After running about 20 min the compressor started cycling again and it blows warmer now.