2003 Toyota Corolla vent blower

[quote:6dcd139b4b="stonerjimjim"]Heater problem
2003 Toyota Corolla 4 cyl Two Wheel Drive Manual 78000 miles

when set on full not much air comes from vents[/quote:6dcd139b4b]

There is a device inside ducts called blend door. Sounds like it is not operating correctly.

This is probably a repair best done by shop, as you have to remove a good portion of dash.

If you want to do it yourself, use car repair manual link in this thread or get a Haynes manual.