Blower Come On But Weak Air Flow

[HipCity]

Hi

I have a ford focus mk2 2002 46k miles 1.6 zetec

No aircon in this car - only asking about the internal fan blower

First the heater stopped working on 123 and only came on at point 4 - But i got this fixed - resistor needed repalced

Now - After it was working for a few weeks - when i turn on the blower, I can hear the fan going buit hardly any air comes out?

when i change it to re-cycle air - it works great "i.e. very powerful"

what could it be thats causing the normal fan not to blow out at normal rate?

thanks for help in advance

[hawker]

Sounds to me your pollen filter is blocked.

I had the same problem. Changed the filter, and now its working great.