AC Diagnosis and advice - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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AC Diagnosis and advice
Posted by Bryce [Email] (more from Bryce) on Mon, 3 Jun 2002 15:42:26
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I have a 94 900s, 2.3 auto, 135,000 miles.
Late last summer the AC started making a hissing noise when I'd turn it on, but it still seemed to work fine (the air coming out of the vents was cold, anyway).
I tried it this weekend and the hissing noise was there, but the cold air wasn't. The compressor seemed to cycle on, but the air from the vents was warm.
Anyone have similar problems that have been resolved? I infer from the hissing and lack of cooling that my freon is leaking away. The archive suggest checking the sight glass, but I have no idea what to look for. Am I correct in thinking that the environmental and personal damage potential is great enough to avoid working on the system myself?
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