heat

My a/c blow hard with them temp selector on cold, but when i switch to heat it barely blows. Whats the cause of this? If its on heat, the more i move it to cold, the harder it blows. The heat is hot it just barely coming out of the vents. All vacuum lines are fixed, everything else works. it...

Well next question is this. I only find replacement blower motors with ONE terminal. Mine has TWO TERMINALS, one for power I assume and one for ground. Since the housing it sits in is PLASTIC, how would a one terminal motor ground? Don't they also make two terminal blower motors? Anyone...