QuestionDear Rocky,
Passat 1.8T petrol, built 1999,sedan,98000Km.The air conditioning works fine (ie hot & cold ), but when not in use,sometimes I get warm to hot air through the centre and side vents, other times ambient (outside temperature)through the vents.
This has happened since new and I really have not been given a technical reason as to why I can not just get 'outside air' flow circulation through the vents (ie without fan assistance ).
If I use the aircon(whether hot or cold and with the different face /leg flow modes),after I turn it off, the next day I will get warm to hot air or outside temp air through the centre and side vents, with the aircon and fan not activated.
The car is great,this is just a pain.
My wife has just moved from a Golf 2L (build 2001),no problems at all with outside air flow through the vents, to a Golf GTI (build 2007),with the same air flow issues I have...bugger.
Sorry to be so wordy, I thank you in advance and welcome your comments.
Sites like this are just so helpful to those who wish to care for their vehicles but lack the technical knowledge.
Regards John
AnswerHello John;
No worries. There could be vacuum control hose issue. Maybe something in the dash is allowing too much, or not enough vacuum in to operate the vent/duct motors. They are called motors, but they are just vacuum operated solenoids. The bad part is they are the first things installed at the factory into the interior/dashboard of the car....that means they are the last thing you remove when the dashboard is removed. Since there is an airbag in there on your car, and 3 air bags on your wife's car, I would turn the control to the most comfortable setting for the days weather, and live with it. To get in there, and start changing things now is an expensive proposition. I would suggest a "pollen filter" change though. Maybe if the air smelled a little fresher, it wouldn't be so bad. Wish I could help more, John. Good luck.
