AC outlet volume
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Junior User
Joined: May 2003
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From: Las Vegas, Nv
AC outlet volume
I just replaced the vacuum motor that opens and closes the Max Air door as it's diaphram was ruptured. Now it is working correctly, however when I go from normal to max the volume of air coming out the vents doesn't seem to increase. The door hasn't been working for about a year and I didn't realize why. Should the volume increase going to Max or just the air get colder from recirculating? In my Dodge the volume increases consderably. Could there be trash (leaves, things dropped through the defrost vents) partly blocking the air through the evaporator? How do I access to check and clean out? Remove the blower motor?
Thread Starter
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Junior User
Joined: May 2003
Posts: 71
Likes: 0
From: Las Vegas, Nv
Found the problem with the volume. Pulled the blower motor, took a flashlight and mirror and looked at the evaporator core. It was 75% (at least) stopped up with 286K miles of fuzz, dirt, etc. Took a hose with a high pressure nozzle and flushed all the junk off it and out the drain. Now it cools great and has lots of volume. Freezes back seat passengers even with outside temp at 99 degrees. 
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