Air Conditioning problem
1984 Ford LTD 6 cyl Two Wheel Drive Automatic 36420 miles
My old LTD which has 36420 original miles on it now misses, runs rough, and sometimes quits when you come to a stop with the a/c running. It also fluctuates when cruising like it's missing. It has a fresh complete tune up with new fuel and air filters and a fresh oil change. The a/c is operating within specs and is very cold. I'm just stumped. Please advise. Thanks in advance.