Weirdly enough the fan works when it wants too, it usually comes on during the summer when I first start it then shuts off when I start driving. It will then come on at random though not at times when I need it most as I drive in stop and go city traffic all the time and it will eventually overheat, not that I'd know that by looking at the temp gauge that doesn't work. I'd know when I see smoke fuming from the hood. Fantastic!