Any auto mechanics-heating question

[Mugen910]

Originally Posted by forgop

So, my wife's van (2005 Dodge Grand Caravan) isn't heating when it warms up in the driveway. You can let it run for 30 minutes in the driveway and it won't remove the frost or anything, even though the temperature is high enough to begin warming from the engine. Once you start driving down the road, you notice after a minute or two, the cold air that was blowing is now as toasty as can be. Any suggestions why we're not heating while it's in park in the driveway but works fine once you get on the road?

This part sounds similar to what my brother when through with my previous car passed down. The problem ended up being that the fan to circulate the air was busted. Of course it worked when he was driving because the air being forced in was enough to make the fan propel and circulate the air around. It could be a fuse or you need a new fan. That's about all I can contribute as I know very little beyond an oil change and brake pads.