1994 dodge van air conditioning not cooling low side 55 and high side is 175. the sight glass on drier is cloudy.?

If the low side pressure is at 55 psi and the high side is at 175 psi, it indicates that the system may be undercharged or there could be a restriction in the system. The cloudy sight glass on the drier suggests that there is moisture or a blockage, preventing proper refrigerant flow. You should check for leaks, ensure the refrigerant level is correct, and inspect the expansion valve or orifice tube for any obstructions. If you're unable to identify the issue, it may be advisable to consult a professional for further diagnosis.