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Old 04-20-2001, 06:32 PM
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On a 1982 300D, which is the high side and which is the low side service port for charging the A/C? There is one port that goes across the front of the engine on top on a hose just behind the fan and there is one underneath on the passengers side of the engine.
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Old 04-20-2001, 09:01 PM
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Join Date: Mar 2001
Posts: 326
The one that goes across the front of the engine is the low side (suction).
Scott Diener
89 300E
93 300E
92 Volvo 740 Wagon aka "Mutt mover"
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Old 04-20-2001, 09:51 PM
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Thanks, that is what I suspected but the problem is, I just installed a new compressor, and when I try to put freon into the system using that port, I get a lot of back pressure. There is no suction at all. Any ideas?
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