My car's AC fan sometimes won't come on. I think it's the blower motor, what do you think?

I’m scratching my head as I had the same issue with 05 Kia Picanto. I followed keith suggestion (thank you!) to pull the blower motor and found contamination or some black dust inside the motor. you’ll have to remove the fan cover to see the motor. I then used WD electrical contact cleaner and spray on the holes and have it thoroughly dried. So far, it is working fine :wink: