When do you know it's time to replace the fan & motor assembly. I have a 2002 Urvan and the casa recommended replacing the fan & motor assembly kahit wala akong naririnig or nararamdaman na kakaiba. What do I have to look out for to be sure it is time to replace? Ang mahal kasi, P13,717.50 for a new fan & motor assembly + P983 sa labor.