A/C HELP needed

[poppa]

A/C is not working ,1994 Yukon. High side hose gets hot ,low side gets warm. The r134 I am using comes with a gauge and is in the 'green' zone @ 50 psi when filling (almost max). Hooking up my manifold set gets me 48-65 not cycling/cycling and the high side gets me 50-70 psi not cycling/cycling. Car off low side @ 45 and high side @50. It also has a R134 scale low side not cycling/cycling +11-+20 and high side +10-+22. Also I noticed some oil at the connections when disconnecting the manifold set , more at the high pressure side. Clutch cycles - on about a second off for 3 or 4. If I jump the pressure switch on (I think) the accumulator (silver can @ firewall) it will stay engaged. Air doesn't even gat cool. Thanks for reading my ramblingsA/C

[cdr]

sounds like it is low on freon  the high side schrader valve is real bad about leaking on that model of truck