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2004 Mercedes-Benz S430 Question: Is the AC system expansion valve a part of the evaporator?

 

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brendal4, Houston, TX, October 12, 2010, 16:21
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The air stopped cooling but still blowed OK...no cool air. I was told that the expansion valve was defective. What does the expansin valve have to do the the evaporator? Is the expansion valve a part of the evaporator?

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