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#1
06-10-2008, 12:49 PM
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Any love out there for a broken AC on a 140 in Houston?
Alright guys, my AC S500 is blowing hot air in this hot summer. The evaporator temp is over 90F during the day. I plan to inject refrigerant dye in there to see if I can find the leak. Is this the plan?
Any good hearted DIYer out there to guide me? Any help is appreciated. Thanks
__________________
93 Toyota Corolla 177K 95 S 500 coupe 82K 92 400E 180K (SOLD) 94 E 420 150, blown gaskets (SOLD) http://www.kanio.net/mercedes_signature.jpg 
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#2
06-10-2008, 01:02 PM
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Is your CCU digital? If so, you may be able to pull up the AC "Actual Values" and "codes".
Search "SteveBFL and AC Diag Continental Imports article"
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Terry Allison N. Calif. & Boca Chica, Panama 09' E320 Bluetec 77k (USA) 09' Hyundai Santa Fe Diesel 48k (S.A.)
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#3
06-10-2008, 03:27 PM
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I pulled the code, no error was detected from the system
__________________
93 Toyota Corolla 177K 95 S 500 coupe 82K 92 400E 180K (SOLD) 94 E 420 150, blown gaskets (SOLD) http://www.kanio.net/mercedes_signature.jpg
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#4
06-10-2008, 07:02 PM
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First thing you need to do is find the leak. Inspect the AC system components and look for oil leakage. Most likely on the high side pressure hose leading from the compressor to the condenser coil. If you don't see any oil leak then it might be a leak in the evaporator. That usually requires a sniffer. Put a small charge of freon into the system and begin hunting down the leak. There is an auto AC business that will locate the leak for a price. Cool Flow, owner name is John Noble. Located near 290 & Mangum.
After you find the leak, fix it, recharge and stay cool.
__________________
I got too many cars!! Insurance eats me alive. Dave 78 Corvette Stingray - 3k 82 242 Turbo Volvo - Manual - 270k 86 300e 5 speed manual - 210k 87 420sel - 240k 89 560sl - 78k 91 420sel - 205k 91 560sel - 85k 94 GMC Suburban - 90k 97 Harley Davidson Heritage Softail - 25k 00 GMC Silverado 1 ton 30k
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#5
06-25-2008, 09:26 AM
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I have put dye in the system. I had to pump quite a bit of freon in there to get about 12 bars of pressure. It started with 2 bars in the beginning. I saw a slight amount of green dye around foam hose underneath the passenger. The hose is made of foam and has white coil spring in it.
Is the hose the evaporator drain hose? I plan go to Cool Flow this week to verify that I have a leaky evaporator, anyone had good/bad experience with Cool Flow?
__________________
93 Toyota Corolla 177K 95 S 500 coupe 82K 92 400E 180K (SOLD) 94 E 420 150, blown gaskets (SOLD) http://www.kanio.net/mercedes_signature.jpg
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#6
06-25-2008, 11:12 AM
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How much is "quite a bit" ?
Yes the hoses you describe are the evaporator drain tubes. Cool Flow does quality work and their prices reflect that.
__________________
I got too many cars!! Insurance eats me alive. Dave 78 Corvette Stingray - 3k 82 242 Turbo Volvo - Manual - 270k 86 300e 5 speed manual - 210k 87 420sel - 240k 89 560sl - 78k 91 420sel - 205k 91 560sel - 85k 94 GMC Suburban - 90k 97 Harley Davidson Heritage Softail - 25k 00 GMC Silverado 1 ton 30k
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#7
06-25-2008, 03:20 PM
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I was glad my W124 never experienced this failure (it's common on W124s too).
__________________
08 W251 R350 97 W210 E320 91 W124 300E 86 W126 560SEL 85 W126 380SE Silver 85 W126 380SE Cranberry 79 W123 250 78 W123 280E 75 W114 280
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#8
06-26-2008, 03:54 AM
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Quote:
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"It's not about how fast you can go, but how well you can go fast." Bob in Richmond '97 S320 (LWB), Ruby Red Metallic, 73k miles '97 S420V, Smoke Silver Metallic, 155k miles
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