S-Class (W140) 1991-1999: 300 SD, S 350TD, 300 SE 2.8, S280, 300 SE 3.2, 300 SEL 3.2, S320, S320L, 400 SE, S420, 400 SEL, S420L, 500 SE, S500, 500 SEL, S500L, 600 SE, S600, 600 SEL, S600L, 500 SEC, 600 SEC

Air Con! fix

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Old Mar 28, 2007 | 06:25 PM
  #1  
Gman91932's Avatar
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From: Imperial Beach CA
1995 S320 and 1995 S500
Air Con! fix

I have added the freon but after just a few weeks it is gone. Is there an inexpensive fix?

Thanks

Gman
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Old Apr 1, 2007 | 10:48 AM
  #2  
Peter Guenther's Avatar
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From: Fl
92 500sel/01 320e wag
Have you benn praying lately, The first step would be to locate the leak, a good shop should be able to do that. It could go down hill from there. The early to mid 90s 140 had serious issues with evaporators going bad, the repacement is a major tear out of the dash and console. The typical cost is about $5,000, and have it done at either MB or a very, very good shop. The dealer might be expensive but they probably have done many, my dealer has only a few mechanics do it.
I have heard of sealants but they gook up everything, and could cost more in the lomg run. I hope it is a hose or something
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Old Apr 1, 2007 | 02:58 PM
  #3  
SAMM's Avatar
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From: Los Angeles
90 300E, 03 E55 Black designo, 06 IWC CLS55
I have this problem and it is the compressor that has a leak. Its hardly that hot for me to bother with it, so I dont mind. I found A garage that reconditions the AC compressor and fits it all back together with a regas for £480 or about $950 US. its usually quite easy to diagnose the fault. There is a dye that is inserted along with the gas. Then I believe they use a UV light to see where the leak is coming from.
I hope its a simple thing for you. Good luck!
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