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Old 01-21-2015, 02:26 PM
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2001 jeep grand cherokee vent actuator

I have an 2001 Grand Cherokee and recently noticed that when I move the air duct knob to different locations, like window deforst, lower air or combination lower and upper that air always stays on window defrost...air will not flow out of any other ducts....I took apart the area of the dash that has the controls and did not see anything visual.....I can not imagine something blocking the ducts. I would think I would get some air out of the other ducts if there was blockage...I thought it was a machanical switch but it is not...it has some sort of air or electrical actuator switch of some sort....anyone ever trouble shoot this type of problem on a Grand Cherokee before?

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Old 01-21-2015, 02:30 PM
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Re: 2001 jeep grand cherokee vent actuator

If your jeep has the manual A/C system, then the actuator is a vacuum type. It uses vacuum from the engine inlet, and without vacuum, its default at the defrost position. Many times a loose line from the engine inlet or dry rotted line is the cause of the trouble. So check first under the hood, the line should enter somewhere on the engine inlet.
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