AC OVER PRESSURE Mystery - Saab 900 Bulletin Board - Saabnet.com
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AC OVER PRESSURE Mystery
Posted by Scanav [Email] (more from Scanav) on Mon, 17 Aug 2015 11:07:51
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1993 900 2.0 R 134 conversion years ago by others
Chronic problem with the over pressure valve on the AC compressor opening up and releasing pressure causing the system to stop cooling. I have vacuumed the system and then refilled , pressures checked etc which resulted in a working system for several days, then same symptoms repeat themselves.
My last tack was to replace the Overpressure valve, the Expansion valve and the Receiver/ dryer. System was vacuumed and refilled, pressures checked again worked for several days and the the above symptoms repeated themselves. Any thoughts ?
Thanks !
posted by 172.56.18...
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