I recently replaced the four O-rings inside my EATC and air still only blows through the floor and defrost vents. My blower seems to be working fine, so its probably not the BCM. It still blows cold air, so I am guessing the compressor is good. What I find strange is when the climate control is turned off warm air from the engine compartment will still blow through the floor and defrost vents. There is definately a correlation between the vechile speed and the force of the air blowing through the vents. I am guessing that something is proped open and was wondering if it could still be the EATC or if I should look elsewhere?