Hello !

Cabin ventilation in my car blocks the air flow during longer rides in hot weather.
I've got a 'nuova' Bravo (2007) with A/C and manual ventilation controls.
After some 1 hour of trip a small amount of smoke (without any smell, probably water vapour) goes out of the central inlets, although in previous years ventilation blocked but there were no smoke at all. Approx. 1,5 - 2 hrs after beginning of the trip air flow stops completely. I can hear the sound of fan, proportional to the fan gear setting, but change of other settings (A/C on/off, air to the window, legs. face and so on) gives no effect. After next hour or so, or when the car gets colder everything goes back to the proper state.
Does anybody know how the steering of the ventilation flaps works ? Are there any electrical actuators that may be prone to overheating ?

Best regards

There are literally tens of threads with this or similar issue with actuators. Just use the search, it would be easier, some of the threads have steps for fixing various issues with A/C vents.

Thanks for this reply. I've tried to study other threads before posting a new one but most of them refers to broken / jammed actuators or servo motors that ceased to work. I think it's not my case. After getting cold everything works fine until the next long trip. I've also visited authorised garages of Fiat with no result (computer shows no errors, so they state it's OK). And it's a real problem as for quite a long time the only way to enter fresh air into the cabin is by opening the windows.

Oh, I see...Well, not sure what may be causing it, maybe someone else will help...