Thanks Larry,
I may need to clarify exactly what I did. I bypassed the low pressure cutout switch and connected my gauges. There was very little pressure on the high side....so I decided to add freon R134a. I only had one can so I put it in and the high side started coming up and the lines started feeling cool. I drove it for a few miles and it was cooling but not as cool as it should be. I just figured it needed another can.
The next day when I turned on the AC the compressor would not come on......SO,
If I only used one can, would that still constitute a "big" leak if it leaked back to triggering the cutout in 24 hours?

Thanks
Brian

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1995 E300 Diesel
1994 E320
1999 C230K
1994 S500 W140
1990 300 SEL