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膨脹閥失效或漏冷媒

車技匠汽車維修保養中心

膨脹閥是冷氣系統中負責將高溫高壓的液態冷媒降壓為低溫低壓狀態的元件,福斯車系的膨脹閥利用回流冷媒的壓力來控制進入冷媒的壓力,如果這個負責回饋的閥體故障冷氣就會變得不冷,另外膨脹閥也會因為本體有瑕疵使冷媒逐漸洩漏,長時間下來冷媒不足也會使冷氣不冷。
另外阿鍇店長說如果車齡較高(約4年以上)更換膨脹閥時請將負責清除管路中水氣及雜質,俗稱黑干仔的乾燥瓶一併更換。

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