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Vent Selector is stuck????

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Old 12-02-2010, 09:07 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, 10:39 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, 10:40 AM
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Couldn't it also be a sign of the wildvents?
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Old 12-02-2010, 11:25 AM
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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, 11:49 AM
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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, 02:35 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, 02:40 PM
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Originally Posted by Silver_Dodge View Post
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, 04:04 PM
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True.
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Old 12-02-2010, 06:35 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, 06:48 PM
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Originally Posted by EHS22 View Post
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, 09:47 PM
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My '94 done the same thing. I only use the truck for 4 wheeling so I just disconnected the lever under the dash and switch it by hand.
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Old 12-03-2010, 10:30 AM
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Now that you all mention it, I did notice that under pressure the vent would stop bowing. My truck caught wildvents, dirty truck. hahaha.

So, where should I start my traceing at? is there a typical area that usually gets affected? Is there a map of just the vacume tubes and how they run in any manual?
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Old 12-06-2010, 03:03 PM
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Nothing? No other wildvents survivor with any advice?
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Old 12-06-2010, 04:14 PM
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Read this thread to fix it http://dodgeforum.com/forum/2nd-gen-...ild-vents.html
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Old 02-22-2013, 12:15 AM
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Default corection and wild vents is realy justa loss off vacuum

Quote:
Originally Posted by HeyYou View Post
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.
actualy in most cars under heavey acceleration while A/C is on the computer will turn off A/C to give more power to the wheeles because even tho A/C doesnt use muc power it still uses power needed under heavey acceleation
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Old 02-22-2013, 01:31 AM
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Start following the vacuum line off passenger side of intake, they branch off a couple time and that's where the checks valves live. You more than likely have a cracked line before they disappear into firewall, which will default the vent to defrost only. But yeh, search wild vents. If after fixing the break and you still get get switching to defrost when accelerating, then you need to replace the check valves also. 8.00 from dealer.
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Old 02-22-2013, 11:22 AM
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Quote:
Originally Posted by bigblueownerjon View Post
actualy in most cars under heavey acceleration while A/C is on the computer will turn off A/C to give more power to the wheeles because even tho A/C doesnt use muc power it still uses power needed under heavey acceleation
The PCM will turn off the COMPRESSOR, not the blower fan.

I would also point out this thread is more than two years old.......
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Old 02-22-2013, 03:07 PM
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Quote:
Originally Posted by HeyYou View Post
The PCM will turn off the COMPRESSOR, not the blower fan.

I would also point out this thread is more than two years old.......
srry thank you for making what i was saying more clear but even tho its 2 years old it can still help some one else out like my self
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Old 02-26-2013, 10:11 AM
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I just recently noticed my vents having issues and I am just starting to learn about this stuff. I had no clue what was going on but after reading this old thread it has help clear somethings up.

I do have a question though. My controller is stuck in defrost and I did find that I have a broken vacuum line. It is just off of the check valve and is the line that runs through the fire wall. How difficult is it to replace this vacuum line?
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Old 02-26-2013, 10:20 AM
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Just splice the line with a piece of rubber vacuum line. The plastic lines LOVE to get brittle, and break...
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Old 02-26-2013, 10:20 AM
 
 
 
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