Auto Temp II buzzing......

[Zack Morton <zmorty74@xxxxxxx>]

It doesn't do it until the cabin temperature is what it is set at.  
Then it buzzes when the car is going low speeds only.  This is only an 
example of what it sounds like, but here's what it sounds like:  A door 
that is supposed to be shut by a vacum doesn't seal all the way, and it 
vibrates, and unless the car is traveling fast enough to have enough 
air flow over it to stop the vibration, it vibrates.
On Nov 6, 2003, at 5:40 PM, Brad Hogg wrote:

> Zack.  What happens when you vary the fan speed?  Does the frequency 
> of the
> buzz change with the fan speed?  It could just be motor or fan noise.  
> You
> have little recourse but to replace the blower motor if it is.  This 
> is not
> a small job so I would probably just live with it.
>
> ----- Original Message -----
> From: "Zack Morton" <zmorty74@xxxxxxx>
> To: <mailing-list@xxxxxxxxxxxxxxxx>
> Sent: Thursday, November 06, 2003 10:01 AM
> Subject: IML: Auto Temp II buzzing......
>
>
>      Hello all.  The Auto Temp II in my 74 Imperial works great, but
> somewhere under the passenger compartment, there is a buzzing when the 
> heat,
> or air is on at some middle temperature.  (not at 85 and 65 degrees.)  
> It
> happens once the cabin has reached the desired temperature, and then it
> starts buzzing.  Could it be a servo that is not quite sealing all the 
> way?
> Any help on what the problem is, and how to fix it would be great!  
> And, if
> it is the servo, can I repair it, or do I have to buy a new one?  
> Thanks a
> lot!
>
>     ~Zack Morton~
>      '74 4dr. LeBaron
>
>
>