Mine was doing the same thing, instead of paying someone big money to tell me there was a leak....(cause there was a greasy residue on one of the hose's) i went to Auto Zone got one of the dye and stop leak kits !!!! found exactly where the leak was, and of course that hose is on back order for something like 12 years and coming from japan so i put the stop leak in it and new juice and its been blowing cold ever since. Its not a hard thing to do and you get everything you need to test the system for alot less money outta your pocket........