All works fine but then after about 1/2hr nearly all the air stops blowing through the vents. This is the case with A/c or Heater.
I can turn the fan up to full and hear it spinning like mad but still hardly any air through the vents. The vents still feel hot/cold but no air is being blown through.
If I leave the car for a while (maybe an hour) and it all works fine again.
I need to get it sorted because I froze my ass off last winter
Audi A4 Avant 2005 2.0 TDI S-line