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  #1  
Old 07-06-2008, 07:59 PM
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Location: Houston,TX
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A/C Relay Location -HELP ITS HOT IN HOUSTON

I am needing the location of A/C relay for 1981 500SEL Euro. Short history of problem. A/C compressor stopped working, blower works, however getting no power to compressor, thus I am assuming its maybe a relay issue ?

Hot in Houston
Doug J

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  #2  
Old 07-07-2008, 08:46 AM
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On a USA car that is at location (J) in the fuse box.
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  #3  
Old 07-07-2008, 09:27 AM
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Relay type question

In my "J" position is just an ice cube relay (0015420219), although my A/C has been working fine with that relay, should I replace it with the relay speced (0015425819). I should mention that my idle has suffered when I do have A/C on with the ice cube relay
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Old 07-07-2008, 09:55 AM
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The compressor not running is a fairly common thing when the freon pressure is real low (like almost empty). On most cars, it's a safety feature to keep the compressor from burning itself out. It can be tested by jumping out the low pressure switch for a second). If the compressor comes on, then you know it's low. (unfortunately, I don't know where your low pressure switch is located).
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Old 07-07-2008, 10:21 AM
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Correction to my last reply
"In my "J" position is just an ice cube relay (0015420219), although my A/C has been working fine with that relay, should I replace it with the relay speced (0015425819). I should mention that my idle has suffered when I do have A/C on with the ice cube relay"

Correction
In my "j" position is a pink ice cube relay "1165450034" overprotection relay.
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  #6  
Old 07-08-2008, 10:46 AM
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Ok it turned out to be a R-12 loss, one of the fittings to the condenser had come lose, thightened that and checked the rest, ran vacuum, held over night and charged it this morning, its cool in Houston now , lol I paid $35.00 for 12 ounce cans of R-12, needed 3.3 lbs for W126 yikkkesss $$$$$$
Doug j

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