[W126 Coupe] Fw: AIRCON is "Kaput"

[mavris2 at comcast.net]

Dan,

I had something similar. Mine however is an 88.  Mine worked fine for a 
while then it just would not work.  You could see the clutch kick in then it 
would shut off.  I had plenty of gas in the systems and I knew all sensors 
were good as I replaced them in the conversion process. Then all together it 
quite working and only worked when it wanted too.  To make a long story 
short in my case it turned out to be the A/C E.T.R. Switch (evaporator 
temperature switch).  I replaced that and that solved the problem.  But I 
would also say through some gauges on there and see if you have enough gas 
in the system.  R134a will leak out in these benzs so I check the gas first. 
I genearly have to top mine off once a season.  So for 5 bucks for some gas, 
I cant complain.  I just wish they made a correct suction hoses that is 
barrier rated so the darn gas won;t leak out.

Jason

----- Original Message ----- 
From: "Dan Gardner" <cruftsk9 at tpg.com.au>
To: <mbcoupes at mbcoupes.com>
Sent: Friday, January 21, 2005 7:31 AM
Subject: [W126 Coupe] Fw: AIRCON is "Kaput"


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>> My SEC continues to give me grief,1 year after a r134a conversion its a 
>> warm as toast.
>>    The system is not the climate control 5 button unit fitted to most 560 
>> SEC's but the twin wheel manual model.With ignition on blower fan on II 
>> but engine not running I cannot hear the compressor clutch cut in when 
>> select A/C.Fuses are ok.
>>    I am aware there is supposed to be a speed sensor,but the CD rom 
>> refers to the climate control 5 button unit .If anyone can point me in 
>> the right direction to faultfinding this unit I would be gratefull.
>>
>>                                                    Kind Regards  Dan 
>> Gardner    1986 560 SEC euro 220kw(300HP)
>>
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