Hey Guys..

I was wondering if u all could help me with this one...

I have a 2005 VZ with 125k on it..(non-climate control)...i do alot of highway driving...

During the past week or so, i've noticed that after 20-25 min on the highway (100-120 km/h) with the aircon on recirculate, the airflow dramatically decreases, putting the blower on a higher setting has little effect....and as soon as i slow down to 40-50 km/h the blower speeds up to its normal speed....changing the thermostat also has no difference

The interesting thing, however is that when this is happening and i change it to outside air, the blower returns to its orignal speed....

correct me if im wrong...but i dont think that this is a vacum hose problem


any help would be appreciated

Cheers!