[s-cars] Squealing crickets associated with HVAC system

[Fred Munro]

Bob;

There is a small fan in there to pull air over the sensor that measures the
cabin temperature. I've never replaced one, so I can't enlighten you on the
repair procedure.

Fred Munro
'97 S6




-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com] On Behalf Of Robert Myers
Sent: August 23, 2009 2:33 PM
To: S-Car-List at Audifans.Com
Subject: [s-cars] Squealing crickets associated with HVAC system

*This message was transferred with a trial version of CommuniGate(r) Pro*

Hi Y'all,

This noise is not (I don't think anyway) connected with the blower 
for the AC.  Instead it is a high pitched cricket-like sound which 
seems to come from the little (~3/4" square) dash top vent after the 
AC has been running for quite some time - usually an hour or 
more.  The noise goes away if the AC blower fan is slowed way down or 
turned off but I really don't want to have to disable the AC for the 
sake of a little quiet.

Is there a tiny blower in there which moves cabin air over a 
temperature sensor or something like that?  Anyway, what's the repair 
procedure?  Please don't start with "Step 1 - remove the dash".

Bob

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