I could never get the engine A/C in my 1987 El Capitan to work right. It would cycle too much despite being charged, and didn't put out cold enough air. My solution? Take everything out except for the...
Olfarmer- I did this myself because I have no confidence in most technicians today. No one would have taken the time or dedication to do it right, and either way it would have cost $thousands more, I have about $850 invested. With the money I saved I could afford a mistake or two, fortunately I didn't make any, and now I have a vacuum pump for future use. There's enough information at my fingertips that I can learn anything that I want. I also took a class in HVAC in college, that helped.