datkinsonsr
Full Access Member
I have the factory installed system that has been changed over to R134A. Before my problems started, I was getting 38 to 40 degrees from the ducts, 28psi low/225psi high, ambient 98 degrees. Because I drive a lot of city stop and go, I decided to go to a variable orifice tube to improve cooling. Worked fine for a couple of days and then the orifice tube blew apart. Top half of tube was missing. Cleaned system and went back to the original fixed tube. Note: when conversion was done, no high pressure switch was installed. I have heard this is needed, but am not sure. Possible high pressure problem? Also, I see that there are different color orifice tubes for this system, but have not been able to find out what the different colors represent. Which color is correct for this system? I would prefer to have the variable orifice tube if I can get this done correctly. Anyone here with experience on this one?