Re: Noisy Heater/AC fan
What kind of burning smell is it? Electrical? It can be that some organic material (leaves etc) entered the AC system and is now laying on the heater core, but i wont expect a real burning smell coming from that. If it is electrical, then it could come from the blower motor itself. After removing the blower motor, turn it by hand and feel if maybe one of the bearings gone bad (axial or radial play on the fan).