Ticking from vents

[accuab]

When I turn on the air conditioner in a 98 malibu I hear a slight ticking coming from the vents. It is more profound towards the passenger side. I know the blower motor is on the passenger side of the vehicle. The ticking is there with the ac on and off. What might the sound be caused by?

[Johnny R]

Possibly a leaf or something caught in the squirrel cage blower? Does it tic faster or slower when you change the blower speed?

[oldblu65]

Something may have fallen down into the defrost vents on top of the dash .The airflow is causing it to vibrate .

[accuab]

The sound does get faster with the higher speeds of the fan. How would I go about checking to see if something is down in it?

[jonnik]

To get to the blower fan, remove the glove box. The fan can then be cleaned by lifting the cover and removing any debris from inside the fan cage.

[accuab]

Thanks to the people that helped me out with this. I finally got around to pulling the blower motor and it was full of leaves. After removing them, all the weird sounds from it went away.