Fan noise in dashboard

nissan
sentra

#1

I have a 2004 Nissan Sentra that makes noise when fan is on (even when engine is off). This noise comes from behind the dashboard and sounds similar to s baseball card in a bicycle wheel. Noise goes away if I change the ventilation to recirculate from external air. Any Idea what this is


#2

Probably leaves or something similar that have fallen down the fresh air inlet and are now touching the blower wheel.


#3

Where do I look to fix this


#4

You’d have to remove the blower to get at whatever is in there. When I get a leaf or something in the blower of my car I usually just wait until it clears itself, which it always does eventually.

Sometimes running the blower on high will clear it out.


#5

I agree. I once had leaves in my Thunderbird vents and the heater fan resister caused them to put smoke into the car. Luckily it did not catch fire.