Accumulator shouldn't be cold. If it is, that means it's picking up superheat. Do a heat load test. Read the article below on how it's done and what the values should be.
Also, it's pretty obvious you don't have a manifold gauge or you'd know the high side pressures. If that's the case, how do you know you added the right amount of refrigerant? Being off by even 2-oz can screw up the system.
Does the compressor clutch come on? If not, it could be a relay, high pressure switch, or low pressure switch. If it does, heater valve is stuck open, causing it to blow HOT air even with the A/C on
Contact to A/C Company ok
That is Safe and easy solution
I just replaced the entire a/c system on my 1990 GMC S15. When I say everything, I mean evap, accumulator, orifice, compressor, lines, and condenser; the entire system. I pulled a vacuum on it for a couple hours and it held it overnight. I charged it up today with R134a and the proper amount and type of oil and when I went in, vent temps were the same as outside: 85. I put my hand on the accumulator and it's not even cold. I currently don't have a way to check the high side, but the low side is right around 30psi. It also seems like the compressor is a little on the loud sounding full of rocks side, but then again, it is the little R4, and it was a new not reman unit. Does anyone have any ideas as to what might be wrong? I have the new, not reman, compressor and everything else is new as well, but I will say that I bought the cheapest orifice tube I could find. Do you think I should've bought the $20 variable orifice instead of the $2 fixed? Thanks for any and all help.
