Air Actuator works - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 11-26-2005, 07:19 PM   #1
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Default Air Actuator works

I checked to see if the actuator works and it seems to be functioning fine.
Does anyone have any ideas where i should check next.
This past summer i also had problems with the A/C not being cold
After a recharge it worked for a little while but stopped during about a week that it wasn't used.
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Old 11-26-2005, 07:49 PM   #2
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What'* the complaint now? No heat?
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Old 11-26-2005, 07:52 PM   #3
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The heat will work for apprx. 30 sec. and then just air will blow.
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Old 11-26-2005, 07:59 PM   #4
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What method did you use to test the actuator? Does the climate control display blink for a minute or two when you start the car?
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Old 11-26-2005, 08:04 PM   #5
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Yes it blinks.
I took the glove box out and watched it when changing temp. It did move back and forth
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Old 11-26-2005, 08:18 PM   #6
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Old 11-26-2005, 08:18 PM   #7
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Yes it blinks.
I took the glove box out and watched it when changing temp. It did move back and forth
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Old 11-26-2005, 08:21 PM   #8
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Good. this should look familiar to you then:

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The yellowish plastic part is the air mix door lever (for lack of a better term). This lever should point to the driver'* B pillar for full cold and to the passenger'* B pillar for full hot. When you adjust from full hot to full cold the lever should travel smoothly without stoping or pausing for the full 90* swing. The actuator may not be allowing the door to fully open and close but is allowing some movement in between.

In this pic, the lever is very close to the full hot position:


This one, the lever is in the full cold position:
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Old 11-26-2005, 08:26 PM   #9
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That'* what i saw.
It moved smoothly but maybe it didn't move all the way
It didn't move more than 2 inches at the most
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Old 11-26-2005, 08:29 PM   #10
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There'* your problem then. The gears are nylon and are subject to becoming flattened. You may want to see Willwren'* thread for a temp fix until you can get the time to replace the actuator.
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