[fdriller9]

Your A/C blower gets air from the top of the engine bay...where the microfilter is. Actually the microfilter filters the air going into the cabin. The position of the A/C intake is what is causing hot air to blow in when you don't have A/C on and just the blower running. This is the same for all cars. If you don't have the A/C on then of course it's going to be warmer that the ambient temperature outside. It's basically taking heated engine air into the cabin.

[fdriller9]

Btw I never have either my a/c or blower with a/c off, running. I always have my windows down, unless a) it is raining b) I'm freezing my ass off c) I'm sweating my ass off.

[ptony101]

This has been driving me crazy too. But I found a kind of work-around.

I found that it happens when the climate control is in AUTO mode (but with AC off). If I manually change the fan speed, even by just one level, thus taking it out of AUTO mode, the air from the vents feels cool, like it should.

Anyone experience the same thing?

[Oulixes]

Originally Posted by poiney

To get fresh air, I need to open the windows. Using the vents with the heat off, still heats the air temperature too much.

I'm curious whether my vent is defective or if this is simply a poor design in the 328.

There is nothing wrong with your vent. The air from the vent is always warmer than the air from the window or the sunroof - it is just physics at work.