Mechanics

STEAM BLOWINGOUT OF AIR CONDITIONER VENT

2001 Mitsubishi Diamante • 150,000 miles

My air works great until I have driven steadily for an hour. Then it starts to blow less cool air (boarder line warm) and "steam" blows from my vents. If I let the car rest for even just 5 minutes, it will work fine when I start back up for a few minutes then start failing again. Any ideas?
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Meplus6
September 9, 2011.



Check to make sure you don't have a leak in the heater core. Steam will blow out from there if there is.