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Old 07-16-2001, 02:47 PM
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Join Date: Dec 1999
Location: Spring Hill,KS USA
Posts: 17
I'm trying to figure out a 1986 560SL that has 2 A/C problems. #1. The climate control comes and goes after hitting bumps. When it works there is power at both sides of the fuse (#6). When it quits there is 0 volts at the fuse. So, whatever powers up the fuse has a problem. A bad connection or relay or whatever. Note: The fuse is good. Unfortunately I don't have a manual for this car, just my SEL. #2. (Probably related to #1) When I say the climate control is working, I mean air is blowing out the defrost and side vents only. I understand this is a default mode and means the climate control has a problem. Only rarely does the compressor engage and when it does there are bubbles in the sight glass. I tried adding freon but I'm unable to get the compressor to engage even though I jump the low pressure switch. Reading other threads I'd guess a bad control panel, but I'd like some input from someone with more MB experience than myself. Thanks.
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Tim Mabry
87 560 SEL
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