1987 Saab 900 AC question.. - Saab 900 Bulletin Board - Saabnet.com
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1987 Saab 900 AC question..
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Posted by Goblin [Email] (#2224) [Profile/Gallery] (more from Goblin) on Wed, 29 Jun 2022 19:28:37 Share Post by Email
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So the AC system holds freon. Trying to figure out the order of getting power to the AC compressor. The AC relay clicks and don't know if it actually is supposed to send power to the AC compressor right then or does the power go through the fan relay and then over to the AC compressor? The AC fan relay clicks and the fan turns on. A little background information I filled up with freon a couple of weeks ago the compressor turned on the air conditioner blue cold I turned the car off I came back a couple of weeks later and now the AC compressor does not kick on. The system is still full of freon. I checked the continuity on the low pressure switch and it has continuity so the Bentley manual says that should be working. Now on to the anti-frost switch I'm going to test it tomorrow but if that test good I'm guessing the only thing left would be the compressor stopped working? Any input would be great. I never even drove the car after I added freon to it. So it's hard to imagine any one of these systems actually failing just sitting there but I guess I could have overpressurized it and blew the seal out of the compressor but wouldn't that leak freon? Wouldn't there be signs that the compressor has failed in some way? Thanks

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