1985-1998 [Subscribe to Daily Digest] |
Lots of things can go wrong with the ACC but the first step is always to re-calibrate or re-set the unit. Instructions are in your handbook, if the kid gave you one!
What you do is set the system to "Auto", and then press the "Auto" and "Vent" buttons (ie. top-left and bottom-right buttons) together for a moment and release them. The display should change from showing your selected temperature to reading "0": then the system will cycle through the varous fan settings, flashing the appropriate lights as it goes.
If this doesn't happen try again - you probably got the timing slightly wrong. This just means that you have to get the feel of it.
If the system finds faults it will put up the number of faults: then it will return to displaying the set temperature. The number of faults shown just tells you how many, not what they are - you have to get the codes read for that information.
If the system reports faults, it's worth doing the re-set again to see if it makes the faults reduce in number, or go away.
Some of the "usual suspects" with ACC are indeed the sensors, ie. the round one on top of the dash, the outside temperature sensor (which can fall off its little bracket - behind the front bumper, driver's side in US) and my favourits, the cabin air temperature sensor, little swith-sized grille in the dash by the seat heater switches. This latter gets fluff on its fan and just sits there twitching rather than running properly. Or it just dies.
All these sensors are quite cheap to replace. At least if you sometimes get cold air there's a sporting chance you have a working compressor and some gas in the system: to check you could just feel the silver pipes running over the wheel arch, near the coolant reservoir. You can check visually that the system is kicking on at the pulley too - low gas will stop that happening. If the gas is gone, by the way, you may need to spend a good chunk on parts like hoses as well as the more obvious hardware.
Some faults, with flaps/relays etc. that make sure the air is getting to the right place, may not show up as faults on the display and you have to work through them. Assistance is available from this board and also from the Townsend Pages (Townsend Imports, saintly Sponsor) as per link below. Site's down at the moment I think, but when you reach the home page you click on "Saabmaster" and hunt out the ACC (automatic climate control) section for the 9000, pausing to admire all the other goodies you will doubtless need later.
Having said all that, part of your problem might be with the fan speed controller and I have an idea that's behind the bulkhead somewhere. Time for you to use the board's excellent "Search" facility... Enjoy!
Townsend Imports "Saabmaster" site
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