Date: Sat, 20 Dec 1997 15:24:15 GMT From: FEDavisnopsamdnet.att.net (Fred E. Davis) Subject: Re: 9000cseDashboard humming noise (climate control?)
On Fri, 19 Dec 1997 13:17:28 -0500, Toby Stull <tobynopsamnnell.com> wrote: >Hi all, > > Its me again with another question about my 93 9000cse. A few minuites >after I start the car till about ten minuites later I get this whining >hum from the dashboard. Seems to be coming from the sensor to the right >of the steering column. Has anyone has similar experiences? Can anyone >tell me what is up? > > > Thanks > Love my first Saab > > Toby What you hear is the small fan that pulls air over the cabin air temperature sensor. Since the fan pulls in air, it also pulls in dust which invariably sticks to the sensor and fan. Since the dust acts to insulate the sensor, it can affect the operation of the ACC. Cleaning the sensor is fairly easy. Pop off the front cover to the sensor, and *carefully* remove the dust (try the tip of a slightly damp paper towel or Q-tip, but be gentle). Cleaning the motor is a bit more difficult, since the sensor assembly comes out the back side of the dashboard. To remove it, you must first pull out the climate control unit from the front of the dash (do not disconnect it), then reach through this hole and pull the temp sensor out from the back of the dash. It's probably easier to gently blow the dust off from the front if you can. This may or may not affect the 'whining' sound you hear. You can test the fan by holding a strip of tissue paper in front of the sensor to see if the fan sucks it up against the inlet. Good luck! Fred
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