Date: Mon, 20 Jan 2003 17:42:08 -0000 From: "Lineone" <lineonenopsamone.org> Subject: Re: Heater problem
Doug, Captain Freedom and Big Disk may be right in their interpretation of your problem, but mine is different. My '92 9000CS 2.3 (Aircon but not Climate Control) gives similar problems. The fan works in all positions, but I only get appreciable heat at full blast. I've had the car for years and never got to the bottom of it. Occasionally (about once every couple of years), for no apparent reason, heat will pour out with no increase in fan speed (the fan is fine). I think there must be a motorised flap-valve in there somewhere with a dodgy contact or something. Sorry this isn't too helpful, but does give you another possible cause of your symptoms. Best luck Adrian "Big Disk" <ollisbrownnopsamternet.com> wrote in message news:b0dv52$amc$1nopsame.btinternet.com... > Had the same problem in my 9000. It is the switch unit. It contains the > rheostat and that fails except in position 4 which is not through the > rheostat. > Get the switch replaced. > > > "Captain Freedom" <data61aS_P_A_Mnopsamcape.net> wrote in message > news:3E288A63.3020907nopsamcape.net... > > Sounds like the resister fuse has blown. Suspect a worn > > blower motor as a likely cause of the fuse going. Not sure > > on where the resister is on this unit. Do have experience > > changing blower motor on 9000 though. Best left to someone > > with some experience in changing these or very good > > directions. > > > > Resister is in circuit to regulate the fan speeds 1,2, and 3. > > No resister needed for high speed. That is why you have the > > condition you have. If motor is going bad the resistance > > value goes up/draws more current and takes out the fuse. > > > > John > > > > Doug wrote: > > > I just bought my first Saab, a 93' 9000 cds and have noticed a problem > > > with the heating. It only seems to work when the fan switch is in > > > position 4. Obviously it would be nice to have more of a choice than > > > no heating at all or blast furnace! Rather worringly I also noticed a > > > para in the handbook which states that position 4 should NOT be used > > > to heat the cabin and is only for maximum cooling in very hot weather. > > > > > > I would be grateful for any pointers in rectifing this problem and > > > likely costs involved. > > > > > > PS Also noticed heating for drivers seat not working but passenger > > > seat fine. > > > Other than having my better half dring during extreme cold weather > > > is this likely to be a simple/cheap repair? > > > > > > Regards > > > > > > Doug > > > >
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