Mercedes S Class Mercedes S350, Mercedes S430, Mercedes S500 and Mercedes S600 Sedans.

AC Problem

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Old Aug 14, 2010 | 06:53 PM
  #1  
jrbjrb's Avatar
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Joined: Jun 2010
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Default AC Problem

The rear air is okay (although never really cold, around 52 degrees) the front will blow cold air sometimes in am. It’s kinda weird, in the mornings when I leave the house, (its cool out) the front air is okay. When it gets up to mid 80's or so the front quits blowing cold air, the rear is still okay.
The compressor is working fine, no leaks, pressure is good.
Any ideas
thanks
 
Old Aug 15, 2010 | 10:43 AM
  #2  
waybomb's Avatar
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Joined: May 2005
Posts: 351
From: Michigan and Wisconsin
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You say pressures are good. If so, then the climate control must be mixing hot air from the heater side in with the cold air from the ac side.
 
Old Aug 15, 2010 | 10:17 PM
  #3  
jrbjrb's Avatar
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I unpluged the sun sensor under the hood and it seemed to improve the cold air coming from the front. I was not aware the front sun sensor affects the heat ducts
Does this make any sence ?
 
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