Thanks John. I may try to see if one of the repair/rebuilders of A/C parts might tackle this one. I think the customer would prefer to keep this original. I learned a lot about this old critter so far and am not finished yet! This A6 compressor has its pressure switch located toward or just under th...

This is the valve. I released the car to the customer until I learn what to do here.

This 79 LIncoln Continental is now is setup for R134a and that is what I charged it with after the flushing and o-ring replacements. It got 2.75lb R134a for the testing and 8oz of PAG46 oil. There is no sticker on this car for charge amount, I am guessing at 3 lb or so R12. It does not have rear A/C...

I am the third shop working with this beast. It has an A6 compressor with a compressor mount pressure switch. It has a single txv on the high side and some kind of remote sensing valve on the outlet of the evaporator. I think they keep a balance of some sort for the evaporator. Some one broke the sw...