Hi Tim,

Got that. New pump is on the way.

Thanks again.

Don

Hi Tim Thanks, I get the bad compressor part. With 120 lbs or whatever the 120 means , indicate that the system is overcharged ? If so how can it be overcharged with 20 oz. of refrigerant? Just wondering. I will get another compressor and try again. Thanks for all your help. Cheers, Don

Sorry, yes the clutch is engaged and is running continuously. 134 seems to be circulating as I can see the foam in the sight glass.

OK , but why is the low side so high when the system only has 20 oz (undercharged)

I am back with some info for TiM. I took the time to finish the project by replacing the expansion valve and most of the O rings. I evacuated the system, still no leaks but I now have high and low reading. Aprox 20 oz in the system, no cold air but not ambient. warm day about 82 degrees. The system ...

Hi All, I just converted my 92 Miata to 134a from R12. I replaced the compressor and drier but not the expansion valve. I didnt go the valve yet because it is very hard to get too. I evacuated the system and it does not appear to leak. I used ester oil in the compressor and drier. I installed 22 oz ...