Only thing on my AC that gave me trouble are the cheap hoses Ford got from BadYear. Leaked on both cars. Wally Mart stop leak actually stopped the leaks on both cars. Latest bug is the compressor relay. It would flake out and the AC would die. Big yellow relay next to the WOT (blue) relay in the middle of the relay box. Cost 9 bucks to fix. This relay has been known to cause the failure of clutch coils due to insufficient current.