The A/C worked excellent Saturday. Then suddenly stop cooling, The clutch engages, compressor runs for about 5 seconds then the clutch disengages. The low side pressure is around 25 p.s.i and the high side is 100. If left cycling the hoses and expansion valve will feel cool and condensation forms. I think have some major crap circulating inside the system. I removed the expansion valve to find it blocked, with what i believe to be the ''inurds'' of the receiver/dryer.