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Vent Selector is stuck????

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Old 12-02-2010, 10:07 AM
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Default Vent Selector is stuck????

The vent selector on my truck is stuck on defrost. I flip the **** to the different settings and all the heat that comes out is only from the defrost vents.

How do I fix? My feet are freezing and my face is on fire.
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Old 12-02-2010, 11:39 AM
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If it is not a problem with the vent blend mechanism itself, then it is probably a vacuum leak you need to find.
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Old 12-02-2010, 11:40 AM
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Couldn't it also be a sign of the wildvents?
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Old 12-02-2010, 12:25 PM
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Originally Posted by dodge dude94 View Post
Couldn't it also be a sign of the wildvents?
The what in the what now?
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Old 12-02-2010, 12:49 PM
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Wild vents is vents switching back to defrost on acceleration. (or, climbing a hill, or any other high engine load event.)

Look under the hood, passenger side, back by the firewall. Vents are controlled with vacuum, and it appears you don't have any. I would be a broken line somewhere between the manifold, and the firewall.
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Old 12-02-2010, 03:35 PM
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Actually, the leak could be in just about any part of the vacuum system. When mine had the "wild vents", it was a leak in the vac line by the CAD on the front axle.
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Old 12-02-2010, 03:40 PM
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Actually, the leak could be in just about any part of the vacuum system. When mine had the "wild vents", it was a leak in the vac line by the CAD on the front axle.
I think he has more than just a 'leak' though. I think something is either broken off, or disconnected. Start at the 'easy' part, and see what comes up.
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Old 12-02-2010, 05:04 PM
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True.
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Old 12-02-2010, 07:35 PM
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whenever i have the AC on in my 1997 1500 and i give it more a little throttle or im going up a hill the AC will stop blowing out the vents. is this the "wild vents" y'all are talking about? so its caused by a vaccum leak?
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Old 12-02-2010, 07:48 PM
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whenever i have the AC on in my 1997 1500 and i give it more a little throttle or im going up a hill the AC will stop blowing out the vents. is this the "wild vents" y'all are talking about? so its caused by a vaccum leak?
That is indeed wild vents, and is usually caused by a failed check valve up by the intake manifold. I think there is a DIY fix thread in the FAQ section for it.
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Old 12-02-2010, 07:48 PM
 
 
 
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