Re: No AC - Saab 900 Bulletin Board - Saabnet.com
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Hello,
As stated there the "sensor" in the upper radiator hose is just a switch that goes open when the temperature gets too high. Basically the opposite of the switch in the rad that turns on the fans.
Also as stated by others there is a pressure switch at the receiver dryer in the passenger fender well by the washer resevoir. Both of these switches are between the relay and the compressor so if either switch goes open no compressor.
There also is an anti frost switch for the ac evaporator. It is located under the dash on the passenger side. But you may have to remove the dash to get to it. If it senses the evaporator is freezing it will shut down the compressor. They also can go bad. I don't have a wiring diagram handy but I believe it is also between the relay and the compressor. Good Luck, Bernie
_______________________________________
George Riggin Specialty Automotive
Current Saabs
1993 900 Turbo Conv.
1993 900 Turbo Conv. Auto
2003 9-3 Conv
2004 9-5 Arc Sedan
2005 9-3 SS 4 door
2005 9-3 SS Conv
2007 9-5 Aero Sedan
1986 900 Turbo Conv
A few parts cars also
Posts in this Thread:
- No AC, bwm1945
, Tue, 15 Aug 2023 10:28:35- Re: No AC, JerseySaab
, Tue, 15 Aug 2023 11:56:18- Re: No AC, bwm1945
, Tue, 15 Aug 2023 13:14:18 - Re: No AC, Tushy, Tue, 15 Aug 2023 12:43:28
- Re: No AC, bwm1945
, Tue, 15 Aug 2023 21:18:40 - Re: No AC, bwm1945
, Tue, 15 Aug 2023 13:17:47- Re: No AC, JerseySaab
, Tue, 15 Aug 2023 15:50:15- Re: No AC, Bernie
, Thu, 17 Aug 2023 16:16:31 <-- Viewing This Message- Re: No AC, bwm1945
, Fri, 18 Aug 2023 17:10:27
- Re: No AC, venant, Tue, 15 Aug 2023 11:29:55
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