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05-27-2005, 01:35 PM
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420SEL A/C problem and question
I took my 420 to the dealer re erratic operation of the A/C, during which the compressor cycles off and on in an irregular fashion... working just fine in one operating instance and then not coming on at all in the next run .... The dealer reloaded the Freon and checked some things, but could not isolate the reason for this action by the system and they could not say that the compressor is the problem... it appears to be some kind of problem with the CC or a valve or sensor that causes the system to do this ?? Any ideas??
Also, what is the Mono Valve on this car ... don't recognize the name of this unit, but know it was replaced once .... thanks, Ben Carter
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Ben Harrison Carter 1999 Mercedes ML320 87K 1992 Mercedes 300CE 89K 1995 Corvette 29K -- Sold Dec 09 1989 Mercedes 420SEL 99K -- (Sold 4/08) 1968 Mercedes 230S (106K) (Sold 9/06)) 1976 Mercedes 450SEL 130K (Just sold - 06) 1961 Mercedes 220Sb (sold years ago) 
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