Quote:
Originally Posted by southern_runner
2003 SR5 V8. It has the issue where you hear the buzz from the AC Damper Motor.
When I turn the A/C on and set it to blow out of the dash vents, I get air from the two side vents near each window, but nothing from the two center vents.
I don't think the rear seat is getting air either. Is this an issue with the mixer, or could something be disconnected behind the dash?
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If I'm not mistaken when it's on defrost the air comes out the windshield vents and the 2 outer dash vents to defrost the door glass.
So it sounds like the mode door isn't working and is stuck in defrost mode, check and see if air is coming out the windshield/defrost vents if so then that's the problem, you will need to replace the mode actuator, especially since you're hearing the buzz noise.
You also have a blend door which changes the air from hot to cold, etc., if you can change the temperature without any noise/clicking etc., then that actuator is working as it should, if there's any noise then it could be going bad as well.