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  #1  
Old September 16th, 2009, 08:34 AM
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S. Smith
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NAS 110 A/C Question

My 110 has an issue with the A/C, when I set it to come out of the dash vents it blows through the defrost and will occasionally switch to the vents and then back again to the defrost. It seems like there is a vacuum actuated switch that is not operating correctly. Any help would be appreciated.
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  #2  
Old September 16th, 2009, 10:31 PM
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Julien Dalbin
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Gremlins in your system, playing with your nerves .
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  #3  
Old September 17th, 2009, 12:01 AM
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Michael Steil
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I could be wrong but Mike from ECR made a comment about this on another thread.
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  #4  
Old September 17th, 2009, 09:20 AM
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Calling Mike to the white courtesy phone, Mike...
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  #5  
Old September 17th, 2009, 10:22 AM
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Its a vac issue.
Either the vac motor that moves the flap went tits up, or you have a leak in the vac. system (meaning not enough vac. to hold the flaps open against the airflow).
The most common one I see is some cracking on the vac lines that lead to the vac. reservoir on the LH inner fender (that round black ball with 2 hoses on it). In some cases you can replace those hoses (or just cut off the cracked parts) and then the system will work. That is the only "easy fix".
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  #6  
Old September 17th, 2009, 10:32 AM
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S. Smith
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Thanks, I assumed it was a vac issue and just wanted to get a bead on where to start before digging into the mysteries of the one off A/C of the NAS. Got to love short run manufacturing. What I don't understand was when LR finally got the A/C right on the NAS 110, why did they go back to the shin busters from then on for everything else?

Since it was working and then went intermittent, I am hoping for an easy solution. We will see.
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  #7  
Old September 17th, 2009, 12:59 PM
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I had the same issue and I replaced the broken line with a BMW vaccuum line. Thicker and more flexible. On another note why is it some times when I put the air on high all the dash vents slam shut. WTF
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  #8  
Old September 17th, 2009, 01:17 PM
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Because they rotate too freely in the housing. If the angle is anything other than level, the airfoil provides lift and they fly shut.
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  #9  
Old September 17th, 2009, 01:59 PM
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barry f
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lame
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  #10  
Old September 17th, 2009, 02:01 PM
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S. Smith
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I was not pulling your pud, the vents are too free in the housing, if there was a bit more resistance, the problem would not happen.
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