hi thre
i've got the same problems to.. what the dealer said was the resistor is spoil and he change it , it works fine.. the other thing of course there is a possbily built up in moisture at your air cond blower and perhaps this is why cause the fan to blow slower. there is basically no air coming out as effective as it should be..
get your dealer to deodorize it and it should be working as normal..
that's my thought...
william