Does your blower have a vibration at higher speeds? Have the same problem in my truck. After digging into it I found that the Re-circulation door axle pivot is broken. This door shuts off the outside air intake for re-circulating air. It also closes off the interior air intake when re-circ isn't used. If the door is broken it will sit in a half open position allowing all the forced air to escape through the outside air intake. I hear this is a common thing to happen. The servo motor that cycles the door is a little too powerful and it snaps the axle pivot.
This was great info....I removed the blower motor and sure enough, a piece of the broken plastic hinge was in the blower cage wheel. A temporary fix to restore the full air circulation and keep me cool was to simply wedge the damper door to an open position......permanent repairs will follow if not too expensive...thanks so much ....from one Hemi-Mike to another .....you made my day!!!!!
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Check to see if your vents are connected correctly, if one of your vents are off, clogged or disconnected it will cause this problem. I had the same problem once and come to find out one of the connections were only half way on, corrected the problem and blew like a champ after that.
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Are you talking about looking under the dash to see if the vents are disconnected? Mine only blows half of what it used to and now on extended drives with the AC blowing it drips cold water on my right foot on the accelerator.
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