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  #1  
Old 03-31-2003, 09:07 PM
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Join Date: Jan 2003
Location: MA
Posts: 114
Air condition 126

I have a 87 560 SEL....the A/C is blowing warm air. The compressor is working, but the hoses/lines are warm and you can see fluid/freonb traveling through the little window. The system has pressure too.

In most cars the problem would just be adding freon. Not sure if MBZ is different. Any ideas?
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  #2  
Old 04-01-2003, 08:52 AM
LarryBible
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Are you seeing bubbles or liquid flowing through the sight glass?
If it is bubbles, you are probably low on refrigerant.

To diagnose properly, you REALLY need to hook up manifold gauges.

BTW, in principle, this a/c is no different than any other.

Good luck,
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  #3  
Old 04-01-2003, 10:27 AM
jhal's Avatar
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Join Date: Dec 2002
Location: Brooksville Fl
Posts: 226
Sounds like a bad expansion valve. Hard to tell without manifold gauge readings though.........Otherwise just an educated guess
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