When I hit defrost on my car it cranks up, but not up/defrost. And another thing, the A/C doesn't blow cold when I tried it when it actually got warm a few days ago. And even another thing. Cruising down the road with the therm set to auto, It'll get nice and warm on cold days, then a few minutes later your having to crank up the setting on the knobs because it starts getting cold. What gives with this damn climate control system?

 

Anybody have any ideas?