Blower Fan Repair

It can slowly creep up, intensifying with each passing day, or hit from seemingly out of nowhere. It can be barely noticeable, easily ignored, or so hugely annoying that you don't even want to turn it on. It can be characterized by an alarming shake at high operating speeds, and sound like a garbage disposal chewing through an errant utensil.


No, we're not talking about the neighborhood kid's garage band. This noise hits even closer to home, because it goes with you wherever you drive, emanating from a deep recess under your vehicle's dash. So the potential for repair expense may seem more daunting than the thought of just living with it.

Dis-assembly
But for those who have experienced these symptoms when they turn on their vehicle's interior fan for any HVAC (Heating, Ventilation, Air Conditioning) function, it's usually a problem that just has to be remedied right away. What you may not realize is that, often, removing the blower motor assembly and repairing it is not all that difficult.


Blower fans are basically an electric motor with a fan impeller attached to the motor's shaft. The impeller more resembles that of a water pump than a radiator fan, in fact, being nicknamed the "squirrel cage." It really does resemble the rotating exercise wheel often found in a pet rodent's cage. This design excels in moving a large quantity of air in a confined space.


Some manufacturers mount the motor with the shaft positioned horizontally, with the unit located behind the lower center of the dash, just above the center tunnel. This design works just fine, but is often difficult to service.