What I am trying to determine is if the various speed settings makes any differences, a fault with air flow volume or a venting system fault. The motor shoud be turning at different speed at the various settings and do you feel any difference to the air flow and blower motor speed (determined by the noise level).
If blower motor works correctly, you have a fault with the vent system and check to see if you have a cabin filter. If it is dirty, it can affect air volume.
Monday, September 17th, 2012 AT 5:36 AM