I have a 2012 nissan juke. My AC system does not cool the car if the car is on idle or if it is operating at lower speeds/lower RPM's. When the car speeds up to high city/highway speeds it kicks in and definitely works. At first i was told it could be the cooling fan control module or the fan shroud. I changed both and still the same issue. I checked the AC freon and its working perfectly. Any ideas or suggestions?