My 95 Toyota Avalon had a maddening intermittent A/C problem, 2 reputable shops tried and failed to find the problem, one shop tried 4 days. MCCAIN'S had it 1 day and had diagnosed an intermittent Expansion Valve, Randy recommended replacing the old Evaporator since both items are in a less than "fun" location in the dash and labor would be the same to replace both, especially since Avalon evaporators tend to leak with age. My car was ready the next day by noon. I learned my lesson, bring A/C problems straight to MCCAIN'S. THANKS Randy and crew.